Vulnerability-Lookup

CNVD-2020-46841

Vulnerability from cnvd - Published: 2020-08-19

Title

GnuPG加密问题漏洞

Description

GnuPG是GNU计划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 2.2.18之前版本中存在加密问题漏洞，攻击者可利用该漏洞创建伪造的证书签名。

Severity

中

Patch Name

GnuPG加密问题漏洞的补丁

Patch Description

GnuPG是GNU计划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 2.2.18之前版本中存在加密问题漏洞，攻击者可利用该漏洞创建伪造的证书签名。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

厂商已发布了漏洞修复程序，请及时关注更新： https://lists.gnu.org/archive/html/info-gnu/2019-11/msg00010.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-14855

Impacted products

Name
GNU GnuPG <2.2.18

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-14855",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-14855"
    }
  },
  "description": "GnuPG\u662fGNU\u8ba1\u5212\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\n\nGnuPG 2.2.18\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u521b\u5efa\u4f2a\u9020\u7684\u8bc1\u4e66\u7b7e\u540d\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://lists.gnu.org/archive/html/info-gnu/2019-11/msg00010.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-46841",
  "openTime": "2020-08-19",
  "patchDescription": "GnuPG\u662fGNU\u8ba1\u5212\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 2.2.18\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u521b\u5efa\u4f2a\u9020\u7684\u8bc1\u4e66\u7b7e\u540d\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": "GnuPG\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "GNU GnuPG \u003c2.2.18"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-14855",
  "serverity": "\u4e2d",
  "submitTime": "2019-12-03",
  "title": "GnuPG\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2019-14855 (GCVE-0-2019-14855)

Vulnerability from cvelistv5 – Published: 2020-03-20 00:00 – Updated: 2024-08-05 00:26

Summary

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-326

Assigner

redhat redhat root

References

5 references

URL	Tags
https://usn.ubuntu.com/4516-1/	vendor-advisory
https://rwc.iacr.org/2020/slides/Leurent.pdf
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…
https://lists.gnupg.org/pipermail/gnupg-announce/…
https://dev.gnupg.org/T4755

Impacted products

1 product

Vendor	Product	Version
Red Hat	gnupg2	Affected: 2.2.18

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T00:26:39.140Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "USN-4516-1",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4516-1/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://rwc.iacr.org/2020/slides/Leurent.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dev.gnupg.org/T4755"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "gnupg2",
          "vendor": "Red Hat",
          "versions": [
            {
              "status": "affected",
              "version": "2.2.18"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-326",
              "description": "CWE-326",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-07T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "USN-4516-1",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://usn.ubuntu.com/4516-1/"
        },
        {
          "url": "https://rwc.iacr.org/2020/slides/Leurent.pdf"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855"
        },
        {
          "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html"
        },
        {
          "url": "https://dev.gnupg.org/T4755"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2019-14855",
    "datePublished": "2020-03-20T00:00:00.000Z",
    "dateReserved": "2019-08-10T00:00:00.000Z",
    "dateUpdated": "2024-08-05T00:26:39.140Z",
    "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.

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.