CVE-2018-18751

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
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CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 78%
VendorProductVersion
gnugettext
0.19.8
canonicalubuntu_linux
12.04
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
18.10
redhatenterprise_linux
7.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gettext
bullseye
0.21-4
fixed
bookworm
0.21-12
fixed
sid
0.22.5-2
fixed
trixie
0.22.5-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
gettext
cosmic
Fixed 0.19.8.1-8ubuntu0.1
released
bionic
Fixed 0.19.8.1-6ubuntu0.1
released
xenial
Fixed 0.19.7-2ubuntu3.1
released
trusty
Fixed 0.18.3.1-1ubuntu3.1
released
Common Weakness Enumeration
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/doublefree
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
https://usn.ubuntu.com/3815-1/
https://usn.ubuntu.com/3815-2/
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/doublefree
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
https://usn.ubuntu.com/3815-1/
https://usn.ubuntu.com/3815-2/