Vulnerability CVE-2021-42762


Published: 2021-10-20

Description:
BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass that allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by the sandbox, by abusing VFS syscalls that manipulate its filesystem namespace. The impact is limited to host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process remains otherwise confined. NOTE: this is similar to CVE-2021-41133.

Type:

NVD-CWE-Other

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.6/10
6.4/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Wpewebkit -> Wpe webkit 
Webkitgtk -> Webkitgtk 

 References:
https://bugs.webkit.org/show_bug.cgi?id=231479
https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q
http://www.openwall.com/lists/oss-security/2021/10/26/9
http://www.openwall.com/lists/oss-security/2021/10/27/1
http://www.openwall.com/lists/oss-security/2021/10/27/2
http://www.openwall.com/lists/oss-security/2021/10/27/4

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