Vulnerability-Lookup

CNVD-2020-13701

Vulnerability from cnvd - Published: 2020-02-26

Title

Squid ext_lm_group_acl越界写漏洞

Description

Squid是一套代理服务器和Web缓存服务器软件。 Squid ext_lm_group_acl解析NTLM验证凭据存在越界写漏洞，远程攻击者可以利用该漏洞提交特殊的请求，可获取敏感信息或者进行拒绝服务攻击。

Severity

高

Patch Name

Squid ext_lm_group_acl越界写漏洞的补丁

Patch Description

Squid是一套代理服务器和Web缓存服务器软件。 Squid ext_lm_group_acl解析NTLM验证凭据存在越界写漏洞，远程攻击者可以利用该漏洞提交特殊的请求，可获取敏感信息或者进行拒绝服务攻击。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch

Reference

http://www.squid-cache.org/Advisories/SQUID-2020_3.txt

Impacted products

Name
Team Squid Squid < 4.10

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8517",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-8517"
    }
  },
  "description": "Squid\u662f\u4e00\u5957\u4ee3\u7406\u670d\u52a1\u5668\u548cWeb\u7f13\u5b58\u670d\u52a1\u5668\u8f6f\u4ef6\u3002\n\nSquid ext_lm_group_acl\u89e3\u6790NTLM\u9a8c\u8bc1\u51ed\u636e\u5b58\u5728\u8d8a\u754c\u5199\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u6216\u8005\u8fdb\u884c\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttp://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-13701",
  "openTime": "2020-02-26",
  "patchDescription": "Squid\u662f\u4e00\u5957\u4ee3\u7406\u670d\u52a1\u5668\u548cWeb\u7f13\u5b58\u670d\u52a1\u5668\u8f6f\u4ef6\u3002\r\n\r\nSquid ext_lm_group_acl\u89e3\u6790NTLM\u9a8c\u8bc1\u51ed\u636e\u5b58\u5728\u8d8a\u754c\u5199\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u6216\u8005\u8fdb\u884c\u62d2\u7edd\u670d\u52a1\u653b\u51fb\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": "Squid ext_lm_group_acl\u8d8a\u754c\u5199\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Team Squid Squid \u003c 4.10"
  },
  "referenceLink": "http://www.squid-cache.org/Advisories/SQUID-2020_3.txt",
  "serverity": "\u9ad8",
  "submitTime": "2020-02-11",
  "title": "Squid ext_lm_group_acl\u8d8a\u754c\u5199\u6f0f\u6d1e"
}

CVE-2020-8517 (GCVE-0-2020-8517)

Vulnerability from cvelistv5 – Published: 2020-02-04 19:54 – Updated: 2024-08-04 10:03

Summary

An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

8 references

URL	Tags
http://www.squid-cache.org/Advisories/SQUID-2020_3.txt	x_refsource_MISC
http://www.squid-cache.org/Versions/v4/changesets…	x_refsource_MISC
https://usn.ubuntu.com/4289-1/	vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://security.gentoo.org/glsa/202003-34	vendor-advisoryx_refsource_GENTOO
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://security.netapp.com/advisory/ntap-2021030…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2024-08-04T10:03:46.372Z",
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            "tags": [
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            "url": "http://www.squid-cache.org/Advisories/SQUID-2020_3.txt"
          },
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            "tags": [
              "x_refsource_MISC",
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            "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-6982f1187a26557e582172965e266f544ea562a5.patch"
          },
          {
            "name": "USN-4289-1",
            "tags": [
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            "url": "https://security.gentoo.org/glsa/202003-34"
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            "name": "openSUSE-SU-2020:0606",
            "tags": [
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          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
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            "url": "https://security.netapp.com/advisory/ntap-20210304-0002/"
          }
        ],
        "title": "CVE Program Container"
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      "descriptions": [
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          "lang": "en",
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          "url": "https://usn.ubuntu.com/4289-1/"
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          "tags": [
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        },
        {
          "name": "GLSA-202003-34",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202003-34"
        },
        {
          "name": "openSUSE-SU-2020:0606",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html"
        },
        {
          "name": "openSUSE-SU-2020:0623",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210304-0002/"
        }
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          "reference_data": [
            {
              "name": "http://www.squid-cache.org/Advisories/SQUID-2020_3.txt",
              "refsource": "MISC",
              "url": "http://www.squid-cache.org/Advisories/SQUID-2020_3.txt"
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    "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.

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CNVD-2020-13701

CVE-2020-8517 (GCVE-0-2020-8517)

Tags

Sightings

Nomenclature

Related by attack behaviour