CVE-2021-42762

Published on: 10/20/2021 12:00:00 AM UTC

Last Modified on: 11/26/2021 09:00:00 PM UTC

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Certain versions of Debian Linux from Debian contain the following vulnerability:

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.

  • CVE-2021-42762 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.

CVSS3 Score: 5.3 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED LOW LOW LOW

CVSS2 Score: 4.6 - MEDIUM

Access
Vector
Access
Complexity
Authentication
LOCAL LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
oss-security - Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 www.openwall.com
text/html
URL Logo MLIST [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
231479 – [WPE][GTK] Limited sandbox escape via VFS syscalls bugs.webkit.org
text/html
URL Logo MISC bugs.webkit.org/show_bug.cgi?id=231479
Debian -- Security Information -- DSA-4995-1 webkit2gtk www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-4995
oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 www.openwall.com
text/html
URL Logo MLIST [oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
[SECURITY] Fedora 35 Update: webkit2gtk3-2.34.1-2.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-db6ebb2d68
oss-security - Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 www.openwall.com
text/html
URL Logo MLIST [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
[SECURITY] Fedora 33 Update: webkit2gtk3-2.34.1-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-131360fa9a
oss-security - Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 www.openwall.com
text/html
URL Logo MLIST [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
CVE-2021-41133: Sandbox bypass via recent VFS-manipulating syscalls · Advisory · flatpak/flatpak · GitHub github.com
text/html
URL Logo MISC github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q
Debian -- Security Information -- DSA-4996-1 wpewebkit www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-4996
[SECURITY] Fedora 34 Update: webkit2gtk3-2.34.1-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-483d896d1d

Related QID Numbers

  • 178857 Debian Security Update for webkit2gtk (DSA 4995-1)
  • 178858 Debian Security Update for wpewebkit (DSA 4996-1)
  • 198555 Ubuntu Security Notification for WebKitGTK Vulnerabilities (USN-5127-1)
  • 282041 Fedora Security Update for webkit2gtk3 (FEDORA-2021-483d896d1d)
  • 282042 Fedora Security Update for webkit2gtk3 (FEDORA-2021-131360fa9a)
  • 502199 Alpine Linux Security Update for webkit2gtk
  • 710570 Gentoo Linux WebkitGTK+ Multiple Vulnerabilities (GLSA 202202-01)
  • 751325 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:1454-1)
  • 751333 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:3603-1)
  • 751392 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:3769-1)
  • 751394 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:3768-1)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
DebianDebian Linux10.0AllAllAll
Operating
System
DebianDebian Linux11.0AllAllAll
Operating
System
FedoraprojectFedora33AllAllAll
Operating
System
FedoraprojectFedora34AllAllAll
Operating
System
FedoraprojectFedora35AllAllAll
ApplicationWebkitgtkWebkitgtkAllAllAllAll
ApplicationWpewebkitWpe WebkitAllAllAllAll
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
  • cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-42762 : BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass t… twitter.com/i/web/status/1… 2021-10-20 19:08:01
Twitter Icon @Robo_Alerts Potentially Critical CVE Detected! CVE-2021-42762 Description: BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit b… twitter.com/i/web/status/1… 2021-10-20 20:00:10
Twitter Icon @SecRiskRptSME RT: CVE-2021-42762 BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypas… twitter.com/i/web/status/1… 2021-10-21 07:33:20
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