Vulnerability-Lookup

CNVD-2020-53541

Vulnerability from cnvd - Published: 2020-09-23

Title

GnuTLS加密问题漏洞（CNVD-2020-53541）

Description

GnuTLS是一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS 3.6.14版本中存在安全漏洞。攻击者可通过实施中间人攻击利用该漏洞绕过TLS 1.3版本的身份验证并恢复TLS 1.2版本的先前会话。

Severity

中

Patch Name

GnuTLS加密问题漏洞（CNVD-2020-53541）的补丁

Patch Description

GnuTLS是一款免费的用于实现SSL、TLS和DTLS协议的安全通信库。 GnuTLS 3.6.14版本中存在安全漏洞。攻击者可通过实施中间人攻击利用该漏洞绕过TLS 1.3版本的身份验证并恢复TLS 1.2版本的先前会话。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： https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-06-03

Reference

https://access.redhat.com/security/cve/cve-2020-13777

Impacted products

Name
Gnutls GnuTLS 3.6.14

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-13777"
    }
  },
  "description": "GnuTLS\u662f\u4e00\u6b3e\u514d\u8d39\u7684\u7528\u4e8e\u5b9e\u73b0SSL\u3001TLS\u548cDTLS\u534f\u8bae\u7684\u5b89\u5168\u901a\u4fe1\u5e93\u3002\n\nGnuTLS 3.6.14\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5b9e\u65bd\u4e2d\u95f4\u4eba\u653b\u51fb\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7TLS 1.3\u7248\u672c\u7684\u8eab\u4efd\u9a8c\u8bc1\u5e76\u6062\u590dTLS 1.2\u7248\u672c\u7684\u5148\u524d\u4f1a\u8bdd\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\nhttps://www.gnutls.org/security-new.html#GNUTLS-SA-2020-06-03",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-53541",
  "openTime": "2020-09-23",
  "patchDescription": "GnuTLS\u662f\u4e00\u6b3e\u514d\u8d39\u7684\u7528\u4e8e\u5b9e\u73b0SSL\u3001TLS\u548cDTLS\u534f\u8bae\u7684\u5b89\u5168\u901a\u4fe1\u5e93\u3002\r\n\r\nGnuTLS 3.6.14\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5b9e\u65bd\u4e2d\u95f4\u4eba\u653b\u51fb\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7TLS 1.3\u7248\u672c\u7684\u8eab\u4efd\u9a8c\u8bc1\u5e76\u6062\u590dTLS 1.2\u7248\u672c\u7684\u5148\u524d\u4f1a\u8bdd\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": "GnuTLS\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2020-53541\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Gnutls GnuTLS 3.6.14"
  },
  "referenceLink": "https://access.redhat.com/security/cve/cve-2020-13777",
  "serverity": "\u4e2d",
  "submitTime": "2020-06-05",
  "title": "GnuTLS\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2020-53541\uff09"
}

CVE-2020-13777 (GCVE-0-2020-13777)

Vulnerability from cvelistv5 – Published: 2020-06-04 07:01 – Updated: 2024-08-04 12:25

Summary

GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

10 references

URL	Tags
https://gnutls.org/security-new.html#GNUTLS-SA-20…	x_refsource_CONFIRM
https://www.debian.org/security/2020/dsa-4697	vendor-advisoryx_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/202006-01	vendor-advisoryx_refsource_GENTOO
https://usn.ubuntu.com/4384-1/	vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.netapp.com/advisory/ntap-2020061…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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        },
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          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRQBFK3UZ7SV76IYDTS4PS6ABS2DSJHK/"
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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.

Detection rules are retrieved from Rulezet.

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.