5.3

CVE-2021-42762: debian debian_linux

CVSS: 5.3v3.1MediumModified
AliasesSUSE-SU-2021:3603-1SUSE-SU-2021:3768-1UBUNTU-CVE-2021-42762
Published 20-10-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-42762 is a medium (CVSS 5.3) vulnerability in debian debian_linux. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 44.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.54%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 6 · Related 2
DSA-4995-1DSA-4996-1MGASA-2021-0498RHSA-2025:10364SUSE-SU-2021:3769-1USN-5127-1

Timeline

  1. 20-10-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.54%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

0.00 pp

From 0.54% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.54%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.webkit.org)

    Maturity: unknown

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Suse18 products
  • webkit2gtk3&distro=HPE Helion OpenStack 8< 2.32.4-2.74.5
  • webkit2gtk3&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 2.32.4-15.1
  • webkit2gtk3&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 2.32.4-15.1
  • webkit2gtk3&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP2< 2.32.4-15.1
  • webkit2gtk3&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP3< 2.32.4-15.1
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.34.1-0ubuntu0.20.04.1 | < 2.34.1-1ubuntu1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Debian3 products
  • webkit2gtk< 2.34.1-1
  • wpewebkit< 2.34.1-1
  • debian_linuxEOL10.0 | 11.0
Opensuse2 products
  • webkit2gtk3&distro=openSUSE Leap 15.2< 2.32.4-lp152.2.22.1
  • webkit2gtk3&distro=openSUSE Leap 15.3< 2.32.4-15.1
Fedoraproject1 product
Webkitgtk1 product
Wpewebkit1 product

7 vendors · 31 products

References

22 links
Show all 22 references