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Vulnerability record · CVE-2017-7961 · published 19 April 2017

CVE-2017-7961: Gnome libcroco memory buffer overflow vulnerability

Gnome · Libcroco

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.

7.8 CVSS 3.1 High EPSS 2.0% · top 20.3% CWE-119 · Memory buffer overflow
7.8CVSS 3.1 base score, v2 6.8
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-7961), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.