CVEvulnerability
CVE-2021-42762
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-10-20
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
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.
Affected configurations
• webkitgtk webkitgtk (< 2.34.1)
• wpewebkit wpe webkit (< 2.34.1)
• fedoraproject fedora 33
• fedoraproject fedora 34
• fedoraproject fedora 35
• debian debian linux 10.0
• debian debian linux 11.0
References
- http://www.openwall.com/lists/oss-security/2021/10/26/9 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/27/1 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/27/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/27/4 Mailing List, Third Party Advisory
- https://bugs.webkit.org/show_bug.cgi?id=231479 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5J2LZQTDX53DNSKSGU7TQYCO2HKSTY4/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/ lists.fedoraproject.org
- https://www.debian.org/security/2021/dsa-4995 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4996 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/26/9 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/27/1 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/27/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/27/4 Mailing List, Third Party Advisory
- https://bugs.webkit.org/show_bug.cgi?id=231479 Exploit, Issue Tracking, Vendor Advisory
- https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5J2LZQTDX53DNSKSGU7TQYCO2HKSTY4/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/ lists.fedoraproject.org
- https://www.debian.org/security/2021/dsa-4995 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4996 Third Party Advisory