Vulnerability-Lookup

OESA-2023-1116 (CVE-2023-25564)

Vulnerability from osv_openeuler – Published: 2023-02-24 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

gssntlmssp security update

Details

Implementing the GSSAPI mechanism of NTLMSSP.

Security Fix(es):

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable outlen was not initialized and could cause writing a zero to an arbitrary place in memory if ntlm_str_convert() were to fail, which would leave outlen uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main gss_accept_sec_context entry point. This issue is fixed in version 1.2.0.(CVE-2023-25564)

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the cb and sh buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main gss_accept_sec_context entry point. This will likely trigger an assertion failure in free, causing a denial-of-service. This issue is fixed in version 1.2.0.(CVE-2023-25565)

GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the av_pair is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main gss_accept_sec_context entry point and could cause a denial-of-service if the memory is unmapped. The issue is fixed in version 1.2.0.(CVE-2023-25567)

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-25564	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-25565	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-25567	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "gssntlmssp-debuginfo-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-devel-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-help-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-debugsource-0.7.0-9.oe1.aarch64.rpm"
        ],
        "src": [
          "gssntlmssp-0.7.0-9.oe1.src.rpm"
        ],
        "x86_64": [
          "gssntlmssp-debuginfo-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-help-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-debugsource-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-devel-0.7.0-9.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "gssntlmssp",
        "purl": "pkg:rpm/openEuler/gssntlmssp\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0-9.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "gssntlmssp-debuginfo-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-debugsource-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-devel-0.7.0-9.oe1.aarch64.rpm",
          "gssntlmssp-help-0.7.0-9.oe1.aarch64.rpm"
        ],
        "src": [
          "gssntlmssp-0.7.0-9.oe1.src.rpm"
        ],
        "x86_64": [
          "gssntlmssp-debugsource-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-devel-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-help-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-0.7.0-9.oe1.x86_64.rpm",
          "gssntlmssp-debuginfo-0.7.0-9.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "gssntlmssp",
        "purl": "pkg:rpm/openEuler/gssntlmssp\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0-9.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "gssntlmssp-debugsource-0.7.0-9.oe2203.aarch64.rpm",
          "gssntlmssp-0.7.0-9.oe2203.aarch64.rpm",
          "gssntlmssp-help-0.7.0-9.oe2203.aarch64.rpm",
          "gssntlmssp-debuginfo-0.7.0-9.oe2203.aarch64.rpm",
          "gssntlmssp-devel-0.7.0-9.oe2203.aarch64.rpm",
          "gssntlmssp-debuginfo-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-help-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-debugsource-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-devel-0.7.0-10.oe2203sp1.aarch64.rpm"
        ],
        "src": [
          "gssntlmssp-0.7.0-9.oe2203.src.rpm",
          "gssntlmssp-0.7.0-10.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "gssntlmssp-help-0.7.0-9.oe2203.x86_64.rpm",
          "gssntlmssp-devel-0.7.0-9.oe2203.x86_64.rpm",
          "gssntlmssp-0.7.0-9.oe2203.x86_64.rpm",
          "gssntlmssp-debuginfo-0.7.0-9.oe2203.x86_64.rpm",
          "gssntlmssp-debugsource-0.7.0-9.oe2203.x86_64.rpm",
          "gssntlmssp-help-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-debuginfo-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-debugsource-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-devel-0.7.0-10.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "gssntlmssp",
        "purl": "pkg:rpm/openEuler/gssntlmssp\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0-10.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "gssntlmssp-debuginfo-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-help-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-debugsource-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-0.7.0-10.oe2203sp1.aarch64.rpm",
          "gssntlmssp-devel-0.7.0-10.oe2203sp1.aarch64.rpm"
        ],
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        ],
        "x86_64": [
          "gssntlmssp-help-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-debuginfo-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-debugsource-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-0.7.0-10.oe2203sp1.x86_64.rpm",
          "gssntlmssp-devel-0.7.0-10.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "gssntlmssp",
        "purl": "pkg:rpm/openEuler/gssntlmssp\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0-10.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Implementing the GSSAPI mechanism of NTLMSSP.\r\n\r\nSecurity Fix(es):\r\n\r\nGSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if `ntlm_str_convert()` were to fail, which would leave `outlen` uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue is fixed in version 1.2.0.(CVE-2023-25564)\r\n\r\nGSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This will likely trigger an assertion failure in `free`, causing a denial-of-service. This issue is fixed in version 1.2.0.(CVE-2023-25565)\r\n\r\nGSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The issue is fixed in version 1.2.0.(CVE-2023-25567)",
  "id": "OESA-2023-1116",
  "modified": "2026-08-06T11:05:35Z",
  "published": "2023-02-24T11:05:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1116"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25564"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25565"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25567"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "gssntlmssp security update",
  "upstream": [
    "CVE-2023-25564",
    "CVE-2023-25565",
    "CVE-2023-25567"
  ]
}

CVE-2023-25564 (GCVE-0-2023-25564)

Vulnerability from cvelistv5 – Published: 2023-02-14 17:35 – Updated: 2025-03-10 21:12

Title

GSS-NTLMSSP vulnerable to memory corruption when decoding UTF16 strings

Summary

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if `ntlm_str_convert()` were to fail, which would leave `outlen` uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue is fixed in version 1.2.0.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-10 20:57 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/gssapi/gss-ntlmssp/security/ad…	x_refsource_CONFIRM
https://github.com/gssapi/gss-ntlmssp/commit/c753…	x_refsource_MISC
https://github.com/gssapi/gss-ntlmssp/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
gssapi	gss-ntlmssp	Affected: < 1.2.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:25:19.239Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "url": "https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-r85x-q5px-9xfq"
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            "url": "https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-25564",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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      "affected": [
        {
          "product": "gss-ntlmssp",
          "vendor": "gssapi",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.0"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if `ntlm_str_convert()` were to fail, which would leave `outlen` uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue is fixed in version 1.2.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
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      "source": {
        "advisory": "GHSA-r85x-q5px-9xfq",
        "discovery": "UNKNOWN"
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      "title": "GSS-NTLMSSP vulnerable to memory corruption when decoding UTF16 strings"
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    "dateReserved": "2023-02-07T17:10:00.735Z",
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}

CVE-2023-25565 (GCVE-0-2023-25565)

Vulnerability from cvelistv5 – Published: 2023-02-14 17:35 – Updated: 2025-03-10 21:11

Title

GSS-NTLMSSP vulnerable to incorrect free when decoding target information

Summary

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This will likely trigger an assertion failure in `free`, causing a denial-of-service. This issue is fixed in version 1.2.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-10 20:58 UTC

CWE

CWE-590 - Free of Memory not on the Heap

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/gssapi/gss-ntlmssp/security/ad…	x_refsource_CONFIRM
https://github.com/gssapi/gss-ntlmssp/commit/c161…	x_refsource_MISC
https://github.com/gssapi/gss-ntlmssp/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
gssapi	gss-ntlmssp	Affected: < 1.2.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:25:19.244Z",
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            "url": "https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-25565",
                "options": [
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                  },
                  {
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-10T20:58:47.173215Z",
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              },
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        "providerMetadata": {
          "dateUpdated": "2025-03-10T21:11:55.214Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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      "metrics": [
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          "descriptions": [
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          "url": "https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg"
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        },
        {
          "name": "https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0",
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          "url": "https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0"
        }
      ],
      "source": {
        "advisory": "GHSA-7q7f-wqcg-mvfg",
        "discovery": "UNKNOWN"
      },
      "title": "GSS-NTLMSSP vulnerable to incorrect free when decoding target information"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "dateReserved": "2023-02-07T17:10:00.737Z",
    "dateUpdated": "2025-03-10T21:11:55.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2023-25567 (GCVE-0-2023-25567)

Vulnerability from cvelistv5 – Published: 2023-02-14 17:35 – Updated: 2025-03-10 21:11

Title

GSS-NTLMSSP vulnerable to out-of-bounds read when decoding target information

Summary

GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The issue is fixed in version 1.2.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-10 20:58 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/gssapi/gss-ntlmssp/security/ad…	x_refsource_CONFIRM
https://github.com/gssapi/gss-ntlmssp/commit/025f…	x_refsource_MISC
https://github.com/gssapi/gss-ntlmssp/releases/ta…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
gssapi	gss-ntlmssp	Affected: < 1.2.0

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:25:19.291Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

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CVE-2023-25565 (GCVE-0-2023-25565)

CVE-2023-25567 (GCVE-0-2023-25567)

Tags

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Nomenclature

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