High severity · published Apr 19, 2017
CVE-2017-7961
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…
7.8
CVSS
2%
EPSS
No
On KEV
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.
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)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libcroco · Gnome
0.6.11; 0.6.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7961
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7961
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
Mailing List
http://openwall.com/lists/oss-security/2017/04/24/2
Exploit
https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1034482
Issue Tracking
https://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7
Third Party Advisory
https://security.gentoo.org/glsa/201707-13
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