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VULNERABILITIES

CVE-2021-42762 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugs.webkit.org/show_bug.cgi?id=231479 CVEExploitIssue TrackingVendor Advisory
https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q CVEThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/ CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5J2LZQTDX53DNSKSGU7TQYCO2HKSTY4/ CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/ CVE

see all 22 references

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-OtherWeakness Not in a Standard CWE Category[email protected]

Affected Products

ProductVersions
webkitgtk webkitgtk
< 2.34.1

CPE

  • cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
wpewebkit wpe webkit
< 2.34.1

CPE

  • cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
fedoraproject fedora
33
34
35

CPE

  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
debian debian linux
10.0
11.0

CPE

  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

15 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-42762
NVD Published Date:
Oct 20, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-42762 Details - Not Deferred