What’s Vulnerable › Vulnerabilities

CVE-2018-6797

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-17 · updated 2026-06-17
• Weakness: CWE-787

Description

An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.

Affected products

• Canonical Ubuntu Linux: 16.04, 17.10
• Debian Linux: 8.0, 9.0
• perl: from 5.18 through 5.26
• RedHat Enterprise Linux Server: 7.0, 7.3, 7.4, 7.5, 7.6
• RedHat Enterprise Linux Workstation: 6.0, 7.0

References

• http://www.securitytracker.com/id/1040681
• http://www.securitytracker.com/id/1042004
• https://access.redhat.com/errata/RHSA-2018:1192
• https://rt.perl.org/Public/Bug/Display.html?id=132227
• https://security.gentoo.org/glsa/201909-01
• https://usn.ubuntu.com/3625-1/
• https://www.debian.org/security/2018/dsa-4172
• https://www.oracle.com/security-alerts/cpujul2020.html
• http://www.securitytracker.com/id/1040681
• http://www.securitytracker.com/id/1042004
• https://access.redhat.com/errata/RHSA-2018:1192
• https://rt.perl.org/Public/Bug/Display.html?id=132227

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