CVE-2021-35942 Information

Description

The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted crafted pattern potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.

CVSS Vector

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

Reference

https://sourceware.org/bugzilla/show_bug.cgi?id=28011 https://sourceware.org/git/?p=glibc.git;a=commit;h=5adda61f62b77384718b4c0d8336ade8f2b4b35c https://sourceware.org/glibc/wiki/Security%20Exceptions https://security.netapp.com/advisory/ntap-20210827-0005/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1