ubuntu-cve-2021-33294
Vulnerability from osv_ubuntu
Published
2023-07-18 14:15
Modified
2026-04-22 07:40
Summary
Details

In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to cause a denial of service (infinite loop) via crafted file.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "elfutils",
            "binary_version": "0.158-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "libasm1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "libdw1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "libelf1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
          }
        ],
        "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input."
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "elfutils",
        "purl": "pkg:deb/ubuntu/elfutils@0.158-0ubuntu5.3+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.158-0ubuntu5.3+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.157-1ubuntu1",
        "0.158-0ubuntu3",
        "0.158-0ubuntu4",
        "0.158-0ubuntu5",
        "0.158-0ubuntu5.1",
        "0.158-0ubuntu5.2",
        "0.158-0ubuntu5.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "elfutils",
            "binary_version": "0.165-3ubuntu1.2+esm1"
          },
          {
            "binary_name": "libasm1",
            "binary_version": "0.165-3ubuntu1.2+esm1"
          },
          {
            "binary_name": "libdw1",
            "binary_version": "0.165-3ubuntu1.2+esm1"
          },
          {
            "binary_name": "libelf1",
            "binary_version": "0.165-3ubuntu1.2+esm1"
          }
        ],
        "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input."
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "elfutils",
        "purl": "pkg:deb/ubuntu/elfutils@0.165-3ubuntu1.2+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.165-3ubuntu1.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.163-4ubuntu1",
        "0.163-5.1",
        "0.164-1",
        "0.165-3",
        "0.165-3ubuntu1",
        "0.165-3ubuntu1.1",
        "0.165-3ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "elfutils",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
          },
          {
            "binary_name": "libasm1",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
          },
          {
            "binary_name": "libdw1",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
          },
          {
            "binary_name": "libelf1",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
          }
        ],
        "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input."
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "elfutils",
        "purl": "pkg:deb/ubuntu/elfutils@0.170-0.4ubuntu0.1+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.170-0.4ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.170-0.1",
        "0.170-0.2",
        "0.170-0.3",
        "0.170-0.4",
        "0.170-0.4ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "elfutils",
            "binary_version": "0.176-1.1ubuntu0.1"
          },
          {
            "binary_name": "libasm1",
            "binary_version": "0.176-1.1ubuntu0.1"
          },
          {
            "binary_name": "libdw1",
            "binary_version": "0.176-1.1ubuntu0.1"
          },
          {
            "binary_name": "libelf1",
            "binary_version": "0.176-1.1ubuntu0.1"
          }
        ],
        "priority_reason": "No real security impact as this is a command-line utility that is not generally expected to handle untrusted input."
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "elfutils",
        "purl": "pkg:deb/ubuntu/elfutils@0.176-1.1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.176-1.1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.176-1.1",
        "0.176-1.1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "In elfutils 0.183, an infinite loop was found in the function handle_symtab in readelf.c .Which allows attackers to cause a denial of service (infinite loop) via crafted file.",
  "id": "UBUNTU-CVE-2021-33294",
  "modified": "2026-04-22T07:40:04Z",
  "published": "2023-07-18T14:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-33294"
    },
    {
      "type": "REPORT",
      "url": "https://sourceware.org/pipermail/elfutils-devel/2021q1/003607.html"
    },
    {
      "type": "REPORT",
      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=27501"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6322-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33294"
    }
  ],
  "related": [
    "USN-6322-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-33294"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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