CVE-2017-7961

Name: CVE-2017-7961
Creator: NVD / NIST
Published: 2017-04-19T15:59:00.21+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.97%

Last modified Jun 17, 2026

CVE-2017-7961 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 1.97% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.97%

77.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Gnome	Libcroco	0.6.11
Gnome	Libcroco	0.6.12

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
http://openwall.com/lists/oss-security/2017/04/24/2Mailing List, Patch, Third Party Advisory
https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/Exploit, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1034482Issue Tracking, Patch, Third Party Advisory
https://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/201707-13Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
http://openwall.com/lists/oss-security/2017/04/24/2Mailing List, Patch, Third Party Advisory
https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/Exploit, Patch, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1034482Issue Tracking, Patch, Third Party Advisory
https://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/201707-13Third Party Advisory

Timeline

Published: Apr 19, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7961?

How severe is CVE-2017-7961?

CVE-2017-7961 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.97% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7961?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7961?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST