CVE-2017-7961

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-04-19 · updated 2026-06-17
Weakness: CWE-119

Description

The cr_tknzr_parse_rgb function in cr-tknzr.c in libcroco 0.6.11 and 0.6.12 has an "outside the range of representable values of type long" undefined behavior issue, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted CSS file. NOTE: third-party analysis reports "This is not a security issue in my view. The conversion surely is truncating the double into a long value, but there is no impact as the value is one of the RGB components.

Affected products

GNOME Libcroco: 0.6.11, 0.6.12

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
http://openwall.com/lists/oss-security/2017/04/24/2
https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/
https://bugzilla.suse.com/show_bug.cgi?id=1034482
https://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7
https://security.gentoo.org/glsa/201707-13
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
http://openwall.com/lists/oss-security/2017/04/24/2
https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/
https://bugzilla.suse.com/show_bug.cgi?id=1034482
https://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7
https://security.gentoo.org/glsa/201707-13

Get alerted when CVE-2017-7961 or the next vulnerability affects your stack