CVE-2018-12293 in the critical feed json
The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit, as used in WebKi…
published 2018-06-19 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-4267
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 10.0%
- EPSS 10.0% chance of exploitation in 30 days, percentile 95%
- public exploits
- 1
- Exploit-DB
Summary
The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.3 and WPE WebKit prior to version 2.20.1, is vulnerable to a heap-based buffer overflow triggered by an integer overflow, which could be abused by crafted HTML content.
Patch / fix
- webkitgtk webkitgtk+ 2.20.3
- wpewebkit wpe_webkit 2.20.1
- webkit2gtk Debian 14, Debian 13, Debian 12 2.20.3-1
debian advisories DEBIAN-CVE-2018-12293
- webkit2gtk Ubuntu 16.04 LTS 2.20.3-0ubuntu0.16.04.1
- webkit2gtk Ubuntu 18.04 LTS 2.20.3-0ubuntu0.18.04.1
ubuntu advisories UBUNTU-CVE-2018-12293
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- trac.webkit.org/changeset/232618 advisory
Timeline
- Published
- First public exploit (EDB-45205)
Exploit prediction
10.03% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-45205 WebkitGTK+ 2.20.3 - 'ImageBufferCairo::getImageData()' Buffer Overflow (PoC) local, 2018-08-16
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
References
-
trac.webkit.org
/changeset/232618
patch, third-party-advisory, vendor-advisory
-
exploit-db.com
/exploits/45205/
exploit
-
security.gentoo.org
/glsa/201808-04
vendor-advisory
-
usn.ubuntu.com
/3687-1/
vendor-advisory, third-party-advisory
-
bugs.webkit.org
/show_bug.cgi?id=186384
permissions-required, vendor-advisory
-
securityfocus.com
/archive/1/542087/100/0/threaded
mailing-list
-
packetstormsecurity.com
/files/148200/WebKitGTK-Data-Leak-Code-Execution.html
third-party-advisory, vdb-entry
-
openwall.com
/lists/oss-security/2018/06/14/1
mailing-list, technical-description
Sources
- CVE List CVE-2018-12293
- NVD CVE-2018-12293
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.