CVE-2021-35942

moderate-risk
Published 2021-07-22

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.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.1/10 Critical
NETWORK / LOW complexity

Affected Products (7)

Affected Vendors

Debian Gnu Netapp

References (12)

Mailing List https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
Third Party Advisory https://security.gentoo.org/glsa/202208-24
Third Party Advisory https://security.netapp.com/advisory/ntap-20210827-0005/
Issue Tracking https://sourceware.org/bugzilla/show_bug.cgi?id=28011
Broken Link https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=5adda61f62b77384718b4c0d8...
Not Applicable https://sourceware.org/glibc/wiki/Security%20Exceptions
Mailing List https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
Third Party Advisory https://security.gentoo.org/glsa/202208-24
Third Party Advisory https://security.netapp.com/advisory/ntap-20210827-0005/
Issue Tracking https://sourceware.org/bugzilla/show_bug.cgi?id=28011
Broken Link https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=5adda61f62b77384718b4c0d8...
Not Applicable https://sourceware.org/glibc/wiki/Security%20Exceptions
49
/ 100
moderate-risk
Severity 31/34 · Critical
Exploitability 4/34 · Minimal
Exposure 14/34 · Moderate