What’s Vulnerable › Vulnerabilities

CVE-2018-1071

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-09 · updated 2026-06-17
• Weakness: CWE-121

Description

zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 17.10
• Debian Linux: 7.0
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Workstation: 7.0
• zsh: through 5.4.2

References

• http://www.securityfocus.com/bid/103359
• https://access.redhat.com/errata/RHSA-2018:3073
• https://bugzilla.redhat.com/show_bug.cgi?id=1553531
• https://lists.debian.org/debian-lts-announce/2018/03/msg00038.html
• https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
• https://security.gentoo.org/glsa/201805-10
• https://usn.ubuntu.com/3608-1/
• http://www.securityfocus.com/bid/103359
• https://access.redhat.com/errata/RHSA-2018:3073
• https://bugzilla.redhat.com/show_bug.cgi?id=1553531
• https://lists.debian.org/debian-lts-announce/2018/03/msg00038.html
• https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html

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