OESA-2022-1807 (CVE-2021-33643)

Vulnerability from osv_openeuler – Published: 2022-08-05 11:05 – Updated: 2026-08-06 11:05 – Source website
VLAI
Summary
libtar security update
Details

Libtar is a C library for manipulating POSIX tar files. It handles adding and extracting files to/from a tar archive. Requires gcc, make, and zlib.

Security Fix(es):

An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.(CVE-2021-33643)

An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longname, causing an out-of-bounds read.(CVE-2021-33644)

The th_read() function doesn’t free a variable t->th_buf.gnu_longlink after allocating memory, which may cause a memory leak.(CVE-2021-33645)

The th_read() function doesn’t free a variable t->th_buf.gnu_longname after allocating memory, which may cause a memory leak.(CVE-2021-33646)

Severity
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libtar-1.2.20-19.oe1.aarch64.rpm",
          "libtar-help-1.2.20-19.oe1.aarch64.rpm",
          "libtar-debugsource-1.2.20-19.oe1.aarch64.rpm",
          "libtar-devel-1.2.20-19.oe1.aarch64.rpm",
          "libtar-debuginfo-1.2.20-19.oe1.aarch64.rpm"
        ],
        "src": [
          "libtar-1.2.20-19.oe1.src.rpm"
        ],
        "x86_64": [
          "libtar-devel-1.2.20-19.oe1.x86_64.rpm",
          "libtar-1.2.20-19.oe1.x86_64.rpm",
          "libtar-debuginfo-1.2.20-19.oe1.x86_64.rpm",
          "libtar-debugsource-1.2.20-19.oe1.x86_64.rpm",
          "libtar-help-1.2.20-19.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "libtar",
        "purl": "pkg:rpm/openEuler/libtar\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.20-19.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libtar-1.2.20-19.oe1.aarch64.rpm",
          "libtar-devel-1.2.20-19.oe1.aarch64.rpm",
          "libtar-debuginfo-1.2.20-19.oe1.aarch64.rpm",
          "libtar-help-1.2.20-19.oe1.aarch64.rpm",
          "libtar-debugsource-1.2.20-19.oe1.aarch64.rpm"
        ],
        "src": [
          "libtar-1.2.20-19.oe1.src.rpm"
        ],
        "x86_64": [
          "libtar-1.2.20-19.oe1.x86_64.rpm",
          "libtar-debuginfo-1.2.20-19.oe1.x86_64.rpm",
          "libtar-devel-1.2.20-19.oe1.x86_64.rpm",
          "libtar-debugsource-1.2.20-19.oe1.x86_64.rpm",
          "libtar-help-1.2.20-19.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "libtar",
        "purl": "pkg:rpm/openEuler/libtar\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.20-19.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "libtar-debugsource-1.2.20-21.oe2203.aarch64.rpm",
          "libtar-help-1.2.20-21.oe2203.aarch64.rpm",
          "libtar-devel-1.2.20-21.oe2203.aarch64.rpm",
          "libtar-debuginfo-1.2.20-21.oe2203.aarch64.rpm",
          "libtar-1.2.20-21.oe2203.aarch64.rpm"
        ],
        "src": [
          "libtar-1.2.20-21.oe2203.src.rpm"
        ],
        "x86_64": [
          "libtar-debugsource-1.2.20-21.oe2203.x86_64.rpm",
          "libtar-devel-1.2.20-21.oe2203.x86_64.rpm",
          "libtar-1.2.20-21.oe2203.x86_64.rpm",
          "libtar-debuginfo-1.2.20-21.oe2203.x86_64.rpm",
          "libtar-help-1.2.20-21.oe2203.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "libtar",
        "purl": "pkg:rpm/openEuler/libtar\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.20-21.oe2203"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Libtar is a C library for manipulating POSIX tar files. It handles adding and extracting files to/from a tar archive. Requires gcc, make, and zlib.\r\n\r\nSecurity Fix(es):\r\n\r\nAn attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.(CVE-2021-33643)\r\n\r\nAn attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longname, causing an out-of-bounds read.(CVE-2021-33644)\r\n\r\nThe th_read() function doesn\u2019t free a variable t-\u0026gt;th_buf.gnu_longlink after allocating memory, which may cause a memory leak.(CVE-2021-33645)\r\n\r\nThe th_read() function doesn\u2019t free a variable t-\u0026gt;th_buf.gnu_longname after allocating memory, which may cause a memory leak.(CVE-2021-33646)",
  "id": "OESA-2022-1807",
  "modified": "2026-08-06T11:05:04Z",
  "published": "2022-08-05T11:05:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1807"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33643"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33644"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33645"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33646"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libtar security update",
  "upstream": [
    "CVE-2021-33643",
    "CVE-2021-33644",
    "CVE-2021-33645",
    "CVE-2021-33646"
  ]
}



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