CVE-2021-42762
5.3
MEDIUM
CVSS 3.1
EPSS 0.01%
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.
How to fix CVE-2021-42762
To remediate CVE-2021-42762, upgrade the affected package to a fixed version below.
- —upgrade to 2.34.1-1~deb11u1 or later
- —upgrade to 2.34.1-1~deb11u1 or later
Is CVE-2021-42762 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.34.1-1~deb11u1
- from 0, < 2.34.1-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |