Critical severity · published Nov 1, 2017
CVE-2017-1000121
The UNIX IPC layer in WebKit, including WebKitGTK+ prior to 2.16.3, does not properly validate message size metadata, allowing a compromised secondary process to trigger an…
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
The UNIX IPC layer in WebKit, including WebKitGTK+ prior to 2.16.3, does not properly validate message size metadata, allowing a compromised secondary process to trigger an integer overflow and subsequent buffer overflow in the UI process. This vulnerability does not affect Apple products.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Webkitgtk+ · Webkitgtk
before 2.16.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-1000121
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-1000121
Patch
http://trac.webkit.org/changeset/217126/webkit
Vendor Advisory
https://webkitgtk.org/security/WSA-2017-0007.html
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