HOMEVULNERABILITIESCVE-2018-12293
HIGHPOC

CVE-2018-12293

CWE-190Published: June 19, 2018· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-12293 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

A proof-of-concept (PoC) exploit exists for CVE-2018-12293. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
webkitgtk1 product(s)
webkitgtk\+
wpewebkit1 product(s)
wpe webkit
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://trac.webkit.org/changeset/232618
PATCHhttps://trac.webkit.org/changeset/232618
ADVISORYhttp://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.html
ADVISORYhttps://bugs.webkit.org/show_bug.cgi?id=186384
ADVISORYhttps://usn.ubuntu.com/3687-1/
ADVISORYhttp://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.html
ADVISORYhttps://bugs.webkit.org/show_bug.cgi?id=186384
ADVISORYhttps://usn.ubuntu.com/3687-1/

All References (16)

→
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

Quick Facts

CVE IDCVE-2018-12293
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-190
CISA KEVNo
ExploitPOC
Affected3 vendor(s)
PublishedJun 19, 2018

Related CVEs (CWE-190)

CVE-2010-3254
10.0
CVE-2012-5143
10.0
CVE-2008-2663
10.0
CVE-2010-1233
10.0
CVE-2012-5835
10.0
CVE-2013-2555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-12293 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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