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cve[email protected]CVE-2021-42762
HistoryOct 20, 2021 - 7:15 p.m.

CVE-2021-42762

2021-10-2019:15:07
web.nvd.nist.gov
125
cve-2021-42762
webkitgtk
wpe webkit
sandbox bypass
vfs syscalls
unix sockets
cve-2021-41133
security vulnerability

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

6.4 Medium

AI Score

Confidence

High

4.6 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

20.5%

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

NVD
Node
webkitgtkwebkitgtkRange<2.34.1
OR
wpewebkitwpe_webkitRange<2.34.1
Node
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
OR
fedoraprojectfedoraMatch35
Node
debiandebian_linuxMatch10.0
OR
debiandebian_linuxMatch11.0

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

6.4 Medium

AI Score

Confidence

High

4.6 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

20.5%