ubuntu-cve-2018-20651
Vulnerability from osv_ubuntu
Published
2019-01-01 16:29
Modified
2026-04-22 07:38
Summary
Details

A NULL pointer dereference was discovered in elf_link_add_object_symbols in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31.1. This occurs for a crafted ET_DYN with no program headers. A specially crafted ELF file allows remote attackers to cause a denial of service, as demonstrated by ld.

Severity
5.5 (Medium)
CVSS:3.0/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": "No subscription required",
        "binaries": [
          {
            "binary_name": "binutils",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-aarch64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-alpha-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-arm-linux-gnueabi",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-arm-linux-gnueabihf",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-common",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-for-build",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-for-host",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-hppa-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-hppa64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-i686-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-i686-kfreebsd-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-i686-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-ia64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-m68k-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mips-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mips64-linux-gnuabi64",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mips64-linux-gnuabin32",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mips64el-linux-gnuabi64",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mips64el-linux-gnuabin32",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsel-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsisa32r6-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsisa32r6el-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsisa64r6-linux-gnuabi64",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsisa64r6-linux-gnuabin32",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsisa64r6el-linux-gnuabi64",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-mipsisa64r6el-linux-gnuabin32",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-multiarch",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-powerpc-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-powerpc-linux-gnuspe",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-powerpc64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-powerpc64le-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-riscv64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-s390x-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-sh4-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-source",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-sparc64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-x86-64-kfreebsd-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-x86-64-linux-gnu",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "binutils-x86-64-linux-gnux32",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          },
          {
            "binary_name": "libbinutils",
            "binary_version": "2.30-21ubuntu1~18.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "binutils",
        "purl": "pkg:deb/ubuntu/binutils@2.30-21ubuntu1~18.04.3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.30-21ubuntu1~18.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.29.1-4ubuntu1",
        "2.29.1-6ubuntu1",
        "2.29.1-7ubuntu1",
        "2.29.1-8ubuntu1",
        "2.29.1-10ubuntu1",
        "2.29.1-12ubuntu1",
        "2.30-4ubuntu1",
        "2.30-5ubuntu1",
        "2.30-7ubuntu1",
        "2.30-8ubuntu1",
        "2.30-9ubuntu1",
        "2.30-10ubuntu1",
        "2.30-11ubuntu1",
        "2.30-14ubuntu2",
        "2.30-15ubuntu1",
        "2.30-20ubuntu2~18.04",
        "2.30-21ubuntu1~18.04",
        "2.30-21ubuntu1~18.04.1",
        "2.30-21ubuntu1~18.04.2"
      ]
    }
  ],
  "aliases": [],
  "details": "A NULL pointer dereference was discovered in elf_link_add_object_symbols in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31.1. This occurs for a crafted ET_DYN with no program headers. A specially crafted ELF file allows remote attackers to cause a denial of service, as demonstrated by ld.",
  "id": "UBUNTU-CVE-2018-20651",
  "modified": "2026-04-22T07:38:47Z",
  "published": "2019-01-01T16:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-20651"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4336-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-20651"
    }
  ],
  "related": [
    "USN-4336-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/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-2018-20651"
  ]
}



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