Vulnerability-Lookup

CNVD-2021-24265

Vulnerability from cnvd - Published: 2021-04-01

Title

GNU tar拒绝服务漏洞（CNVD-2021-24265）

Description

GNU Tar是GNU社区的一套用于创建tar格式文件的工具。在tar 1.33及之前版本存在安全漏洞，攻击者可利用该漏洞可以向tar提交精心制作的输入文件，从而导致未受控制的内存消耗。

Severity

中

Patch Name

GNU tar拒绝服务漏洞（CNVD-2021-24265）的补丁

Patch Description

GNU Tar是GNU社区的一套用于创建tar格式文件的工具。在tar 1.33及之前版本存在安全漏洞，攻击者可利用该漏洞可以向tar提交精心制作的输入文件，从而导致未受控制的内存消耗。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://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-20193

Impacted products

Name
Gnu Tar <=1.33

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-20193",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-20193"
    }
  },
  "description": "GNU Tar\u662fGNU\u793e\u533a\u7684\u4e00\u5957\u7528\u4e8e\u521b\u5efatar\u683c\u5f0f\u6587\u4ef6\u7684\u5de5\u5177\u3002\n\n\u5728tar 1.33\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u5411tar\u63d0\u4ea4\u7cbe\u5fc3\u5236\u4f5c\u7684\u8f93\u5165\u6587\u4ef6\uff0c\u4ece\u800c\u5bfc\u81f4\u672a\u53d7\u63a7\u5236\u7684\u5185\u5b58\u6d88\u8017\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1ahttps://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-24265",
  "openTime": "2021-04-01",
  "patchDescription": "GNU Tar\u662fGNU\u793e\u533a\u7684\u4e00\u5957\u7528\u4e8e\u521b\u5efatar\u683c\u5f0f\u6587\u4ef6\u7684\u5de5\u5177\u3002\r\n\r\n\u5728tar 1.33\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u5411tar\u63d0\u4ea4\u7cbe\u5fc3\u5236\u4f5c\u7684\u8f93\u5165\u6587\u4ef6\uff0c\u4ece\u800c\u5bfc\u81f4\u672a\u53d7\u63a7\u5236\u7684\u5185\u5b58\u6d88\u8017\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": "GNU tar\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-24265\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Gnu Tar \u003c=1.33"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-20193",
  "serverity": "\u4e2d",
  "submitTime": "2021-03-31",
  "title": "GNU tar\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-24265\uff09"
}

CVE-2021-20193 (GCVE-0-2021-20193)

Vulnerability from cvelistv5 – Published: 2021-03-26 16:41 – Updated: 2024-08-03 17:30

Summary

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

Severity

No CVSS data available.

CWE

CWE-401 - >CWE-125

Assigner

redhat redhat root

References

4 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1917565	x_refsource_MISC
https://savannah.gnu.org/bugs/?59897	x_refsource_MISC
https://git.savannah.gnu.org/cgit/tar.git/commit/…	x_refsource_MISC
https://security.gentoo.org/glsa/202105-29	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
n/a	tar	Affected: 1.33 and earlier

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:30:07.480Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1917565"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://savannah.gnu.org/bugs/?59897"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777"
          },
          {
            "name": "GLSA-202105-29",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202105-29"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "tar",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "1.33 and earlier"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-401",
              "description": "CWE-401-\u003eCWE-125",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-26T11:08:51.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1917565"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://savannah.gnu.org/bugs/?59897"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777"
        },
        {
          "name": "GLSA-202105-29",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202105-29"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-20193",
    "datePublished": "2021-03-26T16:41:23.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:30:07.480Z",
    "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-2021-24265

CVE-2021-20193 (GCVE-0-2021-20193)

Tags

Sightings

Nomenclature

Related by attack behaviour