9.8

CVE-2018-18751

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gnu ≫ Gettext Version 0.19.8
Canonical ≫ Ubuntu Linux Version 12.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 14.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 18.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 18.10
Redhat ≫ Enterprise Linux Version 7.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 4.26% 0.901
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.8 3.9 5.9
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NIST 7.5 10 6.4
AV:N/AC:L/Au:N/C:P/I:P/A:P
CWE-415 Double Free

The product calls free() twice on the same memory address.

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
Third Party Advisory
Exploit
https://github.com/CCCCCrash/POCs/tree/master/Bin/Tools-gettext-0.19.8.1/heapcorruption
Third Party Advisory
Exploit
https://usn.ubuntu.com/3815-1/
Third Party Advisory
https://usn.ubuntu.com/3815-2/
Third Party Advisory