CVE-2018-6798

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% 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-125

Description

An issue was discovered in Perl 5.22 through 5.26. Matching a crafted locale dependent regular expression can cause a heap-based buffer over-read and potentially information disclosure.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 17.10
Debian Linux: 7.0, 8.0, 9.0
perl: from 5.22 through 5.26
RedHat Enterprise Linux Server: 6.0, 7.0, 7.3, 7.4, 7.5
RedHat Enterprise Linux Workstation: 6.0, 7.0

References

http://www.securitytracker.com/id/1040681
https://access.redhat.com/errata/RHSA-2018:1192
https://rt.perl.org/Public/Bug/Display.html?id=132063
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
https://access.redhat.com/errata/RHSA-2018:1192
https://rt.perl.org/Public/Bug/Display.html?id=132063
https://security.gentoo.org/glsa/201909-01
https://usn.ubuntu.com/3625-1/

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