Vulnerability-Lookup

CNVD-2017-35204

Vulnerability from cnvd - Published: 2017-11-27

Title

cURL缓冲区溢出漏洞（CNVD-2017-35204）

Description

cURL是一个利用URL语法在命令行下工作的文件传输工具。 cURL存在缓冲区溢出漏洞。通过返回特制IMAP FETCH响应，远程用户可触发IMAP处理程序发生缓冲区过读，并从目标系统的内存中获取可能敏感的信息，或者导致使用libcurl的目标应用程序崩溃。

Severity

中

Patch Name

cURL缓冲区溢出漏洞（CNVD-2017-35204）的补丁

Patch Description

cURL是一个利用URL语法在命令行下工作的文件传输工具。 cURL存在缓冲区溢出漏洞。通过返回特制IMAP FETCH响应，远程用户可触发IMAP处理程序发生缓冲区过读，并从目标系统的内存中获取可能敏感的信息，或者导致使用libcurl的目标应用程序崩溃。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://curl.haxx.se/docs/adv_20171023.html

Reference

http://www.securityfocus.com/bid/101519

Impacted products

Name
['cURL cURL >=7.20.0，<=7.56.0', 'Libcurl Libcurl >=7.20.0，<=7.56.0']

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "101519"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-1000257"
    }
  },
  "description": "cURL\u662f\u4e00\u4e2a\u5229\u7528URL\u8bed\u6cd5\u5728\u547d\u4ee4\u884c\u4e0b\u5de5\u4f5c\u7684\u6587\u4ef6\u4f20\u8f93\u5de5\u5177\u3002\r\n\r\ncURL\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u901a\u8fc7\u8fd4\u56de\u7279\u5236IMAP FETCH\u54cd\u5e94\uff0c\u8fdc\u7a0b\u7528\u6237\u53ef\u89e6\u53d1IMAP\u5904\u7406\u7a0b\u5e8f\u53d1\u751f\u7f13\u51b2\u533a\u8fc7\u8bfb\uff0c\u5e76\u4ece\u76ee\u6807\u7cfb\u7edf\u7684\u5185\u5b58\u4e2d\u83b7\u53d6\u53ef\u80fd\u654f\u611f\u7684\u4fe1\u606f\uff0c\u6216\u8005\u5bfc\u81f4\u4f7f\u7528libcurl\u7684\u76ee\u6807\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\u3002",
  "discovererName": "Brian Carpenter, Geeknik Labs and 0xd34db347.",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://curl.haxx.se/docs/adv_20171023.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-35204",
  "openTime": "2017-11-27",
  "patchDescription": "cURL\u662f\u4e00\u4e2a\u5229\u7528URL\u8bed\u6cd5\u5728\u547d\u4ee4\u884c\u4e0b\u5de5\u4f5c\u7684\u6587\u4ef6\u4f20\u8f93\u5de5\u5177\u3002\r\n\r\ncURL\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u901a\u8fc7\u8fd4\u56de\u7279\u5236IMAP FETCH\u54cd\u5e94\uff0c\u8fdc\u7a0b\u7528\u6237\u53ef\u89e6\u53d1IMAP\u5904\u7406\u7a0b\u5e8f\u53d1\u751f\u7f13\u51b2\u533a\u8fc7\u8bfb\uff0c\u5e76\u4ece\u76ee\u6807\u7cfb\u7edf\u7684\u5185\u5b58\u4e2d\u83b7\u53d6\u53ef\u80fd\u654f\u611f\u7684\u4fe1\u606f\uff0c\u6216\u8005\u5bfc\u81f4\u4f7f\u7528libcurl\u7684\u76ee\u6807\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\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",
  "patchName": "cURL\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2017-35204\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "cURL cURL \u003e=7.20.0\uff0c\u003c=7.56.0",
      "Libcurl Libcurl \u003e=7.20.0\uff0c\u003c=7.56.0"
    ]
  },
  "referenceLink": "http://www.securityfocus.com/bid/101519",
  "serverity": "\u4e2d",
  "submitTime": "2017-10-25",
  "title": "cURL\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2017-35204\uff09"
}

CVE-2017-1000257 (GCVE-0-2017-1000257)

Vulnerability from cvelistv5 – Published: 2017-10-31 21:00 – Updated: 2026-04-15 21:02

Summary

An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer and the size (zero) to the deliver-data function. libcurl's deliver-data function treats zero as a magic number and invokes strlen() on the data to figure out the length. The strlen() is called on a heap based buffer that might not be zero terminated so libcurl might read beyond the end of it into whatever memory lies after (or just crash) and then deliver that to the application as if it was actually downloaded.

Severity

9.1 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-15 21:02 UTC

CWE

n/a
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mitre mitre root Scorecard

References

8 references

URL	Tags
https://curl.haxx.se/docs/adv_20171023.html	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2017:3263	vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201712-04	vendor-advisoryx_refsource_GENTOO
http://www.securitytracker.com/id/1039644	vdb-entryx_refsource_SECTRACK
https://access.redhat.com/errata/RHSA-2018:3558	vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/101519	vdb-entryx_refsource_BID
http://www.debian.org/security/2017/dsa-4007	vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:2486	vendor-advisoryx_refsource_REDHAT

Date Public

2017-10-31 00:00

Show details on NVD website

JSON

To clipboard

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            ],
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          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
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                "options": [
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T21:02:33.578848Z",
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              },
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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-2017-35204

CVE-2017-1000257 (GCVE-0-2017-1000257)

Tags

Sightings

Nomenclature

Related by attack behaviour