CVE-2018-12294 — WebCore/platform/graphics/texmap/TextureMapperLayer

WebCore/platform/graphics/texmap/TextureMapperLayer.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.2, is vulnerable to a use after free for a WebCore::TextureMapperLayer object.

01What is this vulnerability?

WebCore/platform/graphics/texmap/TextureMapperLayer.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.2, is vulnerable to a use after free for a WebCore::TextureMapperLayer object.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-06-19T21:00:00.000Z
• Last modified: 2024-08-05T08:30:59.998Z

09References

• bugs.webkit.org — https://bugs.webkit.org/show_bug.cgi?id=184729
• trac.webkit.org — https://trac.webkit.org/changeset/231300/webkit
• security.gentoo.org — https://security.gentoo.org/glsa/201808-04
• www.securityfocus.com — http://www.securityfocus.com/archive/1/542087/100/0/threaded
• packetstormsecurity.com — http://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.h…
• www.openwall.com — http://www.openwall.com/lists/oss-security/2018/06/14/1