Critical severity · published Oct 29, 2018
CVE-2018-18751
An issue was discovered in GNU gettext 0.19.8
9.8
CVSS
4.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.3% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
7.0 · source: NVD
GE
Gettext · Gnu
0.19.8 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18751
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18751
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00061.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00065.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00025.html
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:3643
Exploit
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/doublefree
Exploit
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
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