CVE-2018-18751

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-415

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
https://access.redhat.com/errata/RHSA-2019:3643
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefreeExploit, Third Party Advisory
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruptionExploit, Third Party Advisory
https://usn.ubuntu.com/3815-1/Third Party Advisory
https://usn.ubuntu.com/3815-2/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
https://access.redhat.com/errata/RHSA-2019:3643
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefreeExploit, Third Party Advisory
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruptionExploit, Third Party Advisory
https://usn.ubuntu.com/3815-1/Third Party Advisory
https://usn.ubuntu.com/3815-2/Third Party Advisory

Timeline

Published: Oct 29, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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