CVE-2018-12293
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 10.0%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 10.03% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · first 16 August 2018
- CISA KEV
- Not listed
- Weakness
- CWE-190, CWE-787
- Affected
- canonical/ubuntu linux · webkitgtk/webkitgtk\+ · wpewebkit/wpe webkit
- Source
- cve@mitre.org
EPSS moved from 8.4% on 21 September 2026 to 10.0% on 27 October 2026, peaking at 10.4% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2018/06/14/1Mailing List, Technical Description
- http://www.securityfocus.com/archive/1/542087/100/0/threaded
- https://bugs.webkit.org/show_bug.cgi?id=186384Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/201808-04
- https://trac.webkit.org/changeset/232618Patch, Third Party Advisory, Vendor Advisory
- https://usn.ubuntu.com/3687-1/Third Party Advisory
- https://www.exploit-db.com/exploits/45205/
- http://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2018/06/14/1Mailing List, Technical Description
- http://www.securityfocus.com/archive/1/542087/100/0/threaded
- https://bugs.webkit.org/show_bug.cgi?id=186384Permissions Required, Vendor Advisory
- https://security.gentoo.org/glsa/201808-04
- https://trac.webkit.org/changeset/232618Patch, Third Party Advisory, Vendor Advisory
- https://usn.ubuntu.com/3687-1/Third Party Advisory
- https://www.exploit-db.com/exploits/45205/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.