CVE-2018-18751

CRITICAL

GNU Gettext - Double Free

Title source: rule

Description

An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.

References (8)

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html

[Exploit, Third Party Advisory] https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree

[Exploit, Third Party Advisory] https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption

View Exploit ZIP pw:eip

[Third Party Advisory] https://usn.ubuntu.com/3815-1/

[Third Party Advisory] https://usn.ubuntu.com/3815-2/

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2019:3643

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html

Scores

CVSS v3 9.8

EPSS 0.0059

EPSS Percentile 68.7%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-415

Status published

Affected Products (7)

gnu/gettext

canonical/ubuntu_linux

redhat/enterprise_linux

Timeline

Published Oct 29, 2018

Tracked Since Feb 18, 2026