Vulnerability-Lookup

CNVD-2018-21053

Vulnerability from cnvd - Published: 2018-10-16

Title

GnuPG安全绕过漏洞（CNVD-2018-21053）

Description

GnuPG（GNU Privacy Guard）是GNU计划开发的一套开源的加密软件，采用GNU通用公共许可证。该软件支持公钥、对称加密、散列等算法。 GnuPG 2.2.8之前版本中的mainproc.c文件存在安全漏洞，该漏洞源于程序在解密和验证时未能正确处理原始文件名。远程攻击者可利用该漏洞伪造签名电子邮件的验证状态。

Severity

中

Patch Name

GnuPG安全绕过漏洞（CNVD-2018-21053）的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000425.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-12020 https://www.securityfocus.com/bid/104450

Impacted products

Name
Gnupg GnuPG <2.2.8

Show details on source website

JSON

To clipboard

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    "bid": {
      "bidNumber": "104450"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-12020"
    }
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  "description": "GnuPG\uff08GNU Privacy Guard\uff09\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684\u4e00\u5957\u5f00\u6e90\u7684\u52a0\u5bc6\u8f6f\u4ef6\uff0c\u91c7\u7528GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u3002\u8be5\u8f6f\u4ef6\u652f\u6301\u516c\u94a5\u3001\u5bf9\u79f0\u52a0\u5bc6\u3001\u6563\u5217\u7b49\u7b97\u6cd5\u3002\r\n\r\nGnuPG 2.2.8\u4e4b\u524d\u7248\u672c\u4e2d\u7684mainproc.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5728\u89e3\u5bc6\u548c\u9a8c\u8bc1\u65f6\u672a\u80fd\u6b63\u786e\u5904\u7406\u539f\u59cb\u6587\u4ef6\u540d\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f2a\u9020\u7b7e\u540d\u7535\u5b50\u90ae\u4ef6\u7684\u9a8c\u8bc1\u72b6\u6001\u3002",
  "discovererName": "Marcus Brinkmann",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000425.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-21053",
  "openTime": "2018-10-16",
  "patchDescription": "GnuPG\uff08GNU Privacy Guard\uff09\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684\u4e00\u5957\u5f00\u6e90\u7684\u52a0\u5bc6\u8f6f\u4ef6\uff0c\u91c7\u7528GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u3002\u8be5\u8f6f\u4ef6\u652f\u6301\u516c\u94a5\u3001\u5bf9\u79f0\u52a0\u5bc6\u3001\u6563\u5217\u7b49\u7b97\u6cd5\u3002\r\n\r\nGnuPG 2.2.8\u4e4b\u524d\u7248\u672c\u4e2d\u7684mainproc.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u5728\u89e3\u5bc6\u548c\u9a8c\u8bc1\u65f6\u672a\u80fd\u6b63\u786e\u5904\u7406\u539f\u59cb\u6587\u4ef6\u540d\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f2a\u9020\u7b7e\u540d\u7535\u5b50\u90ae\u4ef6\u7684\u9a8c\u8bc1\u72b6\u6001\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
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  "products": {
    "product": "Gnupg GnuPG \u003c2.2.8"
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  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-12020\r\nhttps://www.securityfocus.com/bid/104450",
  "serverity": "\u4e2d",
  "submitTime": "2018-06-11",
  "title": "GnuPG\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff08CNVD-2018-21053\uff09"
}

CVE-2018-12020 (GCVE-0-2018-12020)

Vulnerability from cvelistv5 – Published: 2018-06-08 21:00 – Updated: 2024-08-05 08:24

Summary

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

21 references

URL	Tags
https://usn.ubuntu.com/3675-2/	vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:2180	vendor-advisoryx_refsource_REDHAT
https://lists.gnupg.org/pipermail/gnupg-announce/…	x_refsource_MISC
http://openwall.com/lists/oss-security/2018/06/08/2	x_refsource_MISC
https://www.debian.org/security/2018/dsa-4222	vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:2181	vendor-advisoryx_refsource_REDHAT
https://help.ecostruxureit.com/display/public/UAD…	x_refsource_CONFIRM
https://www.debian.org/security/2018/dsa-4224	vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/104450	vdb-entryx_refsource_BID
https://www.debian.org/security/2018/dsa-4223	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3675-3/	vendor-advisoryx_refsource_UBUNTU
http://www.securitytracker.com/id/1041051	vdb-entryx_refsource_SECTRACK
https://usn.ubuntu.com/3675-1/	vendor-advisoryx_refsource_UBUNTU
https://dev.gnupg.org/T4012	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2019/04/30/4	mailing-listx_refsource_MLIST
http://seclists.org/fulldisclosure/2019/Apr/38	mailing-listx_refsource_FULLDISC
http://packetstormsecurity.com/files/152703/Johnn…	x_refsource_MISC
https://usn.ubuntu.com/3964-1/	vendor-advisoryx_refsource_UBUNTU
https://github.com/RUB-NDS/Johnny-You-Are-Fired	x_refsource_MISC
https://github.com/RUB-NDS/Johnny-You-Are-Fired/b…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Date Public

2018-06-08 00:00

Show details on NVD website

JSON

To clipboard

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            {
              "name": "104450",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/104450"
            },
            {
              "name": "DSA-4223",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2018/dsa-4223"
            },
            {
              "name": "USN-3675-3",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3675-3/"
            },
            {
              "name": "1041051",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1041051"
            },
            {
              "name": "USN-3675-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3675-1/"
            },
            {
              "name": "https://dev.gnupg.org/T4012",
              "refsource": "MISC",
              "url": "https://dev.gnupg.org/T4012"
            },
            {
              "name": "[oss-security] 20190430 Spoofing OpenPGP and S/MIME Signatures in Emails (multiple clients)",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2019/04/30/4"
            },
            {
              "name": "20190430 OpenPGP and S/MIME signature forgery attacks in multiple email clients",
              "refsource": "FULLDISC",
              "url": "http://seclists.org/fulldisclosure/2019/Apr/38"
            },
            {
              "name": "http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html"
            },
            {
              "name": "USN-3964-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3964-1/"
            },
            {
              "name": "https://github.com/RUB-NDS/Johnny-You-Are-Fired",
              "refsource": "MISC",
              "url": "https://github.com/RUB-NDS/Johnny-You-Are-Fired"
            },
            {
              "name": "https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf",
              "refsource": "MISC",
              "url": "https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf"
            },
            {
              "name": "[debian-lts-announce] 20211228 [SECURITY] [DLA 2862-1] python-gnupg security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00027.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-12020",
    "datePublished": "2018-06-08T21:00:00.000Z",
    "dateReserved": "2018-06-07T00:00:00.000Z",
    "dateUpdated": "2024-08-05T08:24:03.773Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2018-21053

CVE-2018-12020 (GCVE-0-2018-12020)

Tags

Sightings

Nomenclature

Related by attack behaviour