What’s Vulnerable › Vulnerabilities

CVE-2018-18521

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-10-19 · updated 2026-06-17
• Weakness: CWE-369

Description

Divide-by-zero vulnerabilities in the function arlib_add_symbols() in arlib.c in elfutils 0.174 allow remote attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by eu-ranlib, because a zero sh_entsize is mishandled.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 18.10
• Debian Linux: 8.0, 9.0
• GNU elfutils: 0.174
• openSUSE Leap: 15.0, 15.1
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Workstation: 7.0

References

• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00052.html
• https://access.redhat.com/errata/RHSA-2019:2197
• https://lists.debian.org/debian-lts-announce/2019/02/msg00036.html
• https://lists.debian.org/debian-lts-announce/2021/10/msg00030.html
• https://sourceware.org/bugzilla/show_bug.cgi?id=23786
• https://sourceware.org/ml/elfutils-devel/2018-q4/msg00055.html
• https://usn.ubuntu.com/4012-1/
• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00052.html
• https://access.redhat.com/errata/RHSA-2019:2197
• https://lists.debian.org/debian-lts-announce/2019/02/msg00036.html
• https://lists.debian.org/debian-lts-announce/2021/10/msg00030.html
• https://sourceware.org/bugzilla/show_bug.cgi?id=23786

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