UBUNTU-CVE-2018-18520

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Source
https://ubuntu.com/security/CVE-2018-18520
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-18520.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-18520
Upstream
Downstream
Related
Published
2018-10-19T00:00:00Z
Modified
2025-09-08T16:45:04Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

An Invalid Memory Address Dereference exists in the function elfend in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handlear in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.

References

Affected packages

Ubuntu:Pro:14.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.158-0ubuntu5.3+esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.158-0ubuntu5.3+esm1

Affected versions

0.*

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": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        }
    ]
}

Ubuntu:16.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.165-3ubuntu1.2?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.165-3ubuntu1.2

Affected versions

0.*

0.163-4ubuntu1
0.163-5.1
0.164-1
0.165-3
0.165-3ubuntu1
0.165-3ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "elfutils",
            "binary_version": "0.165-3ubuntu1.2"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.165-3ubuntu1.2"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.165-3ubuntu1.2"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.165-3ubuntu1.2"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.165-3ubuntu1.2"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.165-3ubuntu1.2"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.165-3ubuntu1.2"
        }
    ]
}

Ubuntu:18.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.170-0.4ubuntu0.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.170-0.4ubuntu0.1

Affected versions

0.*

0.170-0.1
0.170-0.2
0.170-0.3
0.170-0.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "elfutils",
            "binary_version": "0.170-0.4ubuntu0.1"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.170-0.4ubuntu0.1"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.170-0.4ubuntu0.1"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.170-0.4ubuntu0.1"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.170-0.4ubuntu0.1"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.170-0.4ubuntu0.1"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.170-0.4ubuntu0.1"
        }
    ]
}