High severity · published Jul 24, 2022
CVE-2021-46829
GNOME GdkPixbuf (aka GDK-PixBuf) before 2.42.8 allows a heap-based buffer overflow when compositing or clearing frames in GIF files, as demonstrated by io-gif-animation.c…
7.8
CVSS
0.8%
EPSS
No
On KEV
Description
GNOME GdkPixbuf (aka GDK-PixBuf) before 2.42.8 allows a heap-based buffer overflow when compositing or clearing frames in GIF files, as demonstrated by io-gif-animation.c composite_frame. This overflow is controllable and could be abused for code execution, especially on 32-bit systems.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
11.0 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
GD
Gdk-pixbuf · Gnome
before 2.42.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46829
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46829
Mailing List
http://www.openwall.com/lists/oss-security/2022/07/25/1
Exploit
https://github.com/pedrib/PoC/blob/master/fuzzing/CVE-2021-46829/CVE-2021-46829.md
Patch
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/5398f04d772f7f8baf5265715696ed88db0f0512
Patch
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/bca00032ad68d0b0aa2c1f7558db931e52bd9cd2
Exploit
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/190
Exploit
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/merge_requests/121
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