CVE-2021-42762
published 2021-10-20CVE-2021-42762: 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…
PriorityP424medium5.3CVSS 3.1
AVLACLPRLUINSUCLILAL
EPSS
0.50%
39.2th percentile
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
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | webkit2gtk | < webkit2gtk 2.34.1-1 (bookworm) | webkit2gtk 2.34.1-1 (bookworm) |
| debian | wpewebkit | < webkit2gtk 2.34.1-1 (bookworm) | webkit2gtk 2.34.1-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| webkitgtk | webkitgtk | < 2.34.1 | 2.34.1 |
| wpewebkit | wpe_webkit | < 2.34.1 | 2.34.1 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
osv7.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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Ubuntu
WebKitGTK vulnerabilities
vendor_ubuntu·2021-11-01
CVE-2021-42762 WebKitGTK vulnerabilities
Title: WebKitGTK vulnerabilities
Summary: Several security issues were fixed in WebKitGTK.
A large number of security issues were discovered in the WebKitGTK Web and
JavaScript engines. If a user were tricked into viewing a malicious
website, a remote attacker could exploit a variety of issues related to web
browser security, including cross-site scripting attacks, denial of service
attacks, and arbitrary code execution.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK, such as Epiphany, to make all the necessary changes.
Red Hat
webkitgtk: limited sandbox escape via VFS syscalls
vendor_redhat·2021-10-20·CVSS 8.8
CVE-2021-42762 [HIGH] CWE-20 webkitgtk: limited sandbox escape via VFS syscalls
webkitgtk: limited sandbox escape via VFS syscalls
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.
Package: webkitgtk (Red Hat Enterprise Linux 6) - Not affected
Package: webkitgtk3 (Red Hat Enterprise Linux 7) - Not affected
Package: webkit2gtk3 (Red Hat Enterprise Linux 8) - Not affected
Package: webkit2gtk3 (Red Hat Enterprise Linux 9) - Not affected
Debian
CVE-2021-42762: webkit2gtk - BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limite...
vendor_debian·2021·CVSS 8.8
CVE-2021-42762 [HIGH] CVE-2021-42762: webkit2gtk - BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limite...
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.
Scope: local
bookworm: resolved (fixed in 2.34.1-1)
bullseye: resolved (fixed in 2.34.1-1~deb11u1)
forky: resolved (fixed in 2.34.1-1)
sid: resolved (fixed in 2.34.1-1)
trixie: resolved (fixed in 2.34.1-1)
GHSA
GHSA-4ch5-gr7v-q6wq: BubblewrapLauncher
ghsa_unreviewed·2022-05-24·CVSS 8.8
CVE-2021-42762 [HIGH] GHSA-4ch5-gr7v-q6wq: BubblewrapLauncher
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.
OSV
CVE-2021-42762: BubblewrapLauncher
osv·2021-10-20·CVSS 7.8
CVE-2021-42762 [HIGH] CVE-2021-42762: BubblewrapLauncher
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.openwall.com/lists/oss-security/2021/10/26/9http://www.openwall.com/lists/oss-security/2021/10/27/1http://www.openwall.com/lists/oss-security/2021/10/27/2http://www.openwall.com/lists/oss-security/2021/10/27/4https://bugs.webkit.org/show_bug.cgi?id=231479https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4qhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5J2LZQTDX53DNSKSGU7TQYCO2HKSTY4/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/https://www.debian.org/security/2021/dsa-4995https://www.debian.org/security/2021/dsa-4996http://www.openwall.com/lists/oss-security/2021/10/26/9http://www.openwall.com/lists/oss-security/2021/10/27/1http://www.openwall.com/lists/oss-security/2021/10/27/2http://www.openwall.com/lists/oss-security/2021/10/27/4https://bugs.webkit.org/show_bug.cgi?id=231479https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4qhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5J2LZQTDX53DNSKSGU7TQYCO2HKSTY4/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/https://www.debian.org/security/2021/dsa-4995https://www.debian.org/security/2021/dsa-4996
2021-10-20
Published