CVE-2013-2179

xorg-x11-xdm: NULL pointer dereference (DoS) when verifying user credentials in FIPS-140 mode or using glibc >= 2.17

Published Dec 27, 2013 CVSS 2.0 · 4.3 Medium EPSS 2.4% KEV · Not listed
Description
X.Org xdm 1.1.10, 1.1.11, and possibly other versions, when performing authentication using certain implementations of the crypt API function that can return NULL, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by attempting to log into an account whose password field contains invalid characters, as demonstrated using the crypt function from glibc 2.17 and later with (1) the "!" character in the salt portion of a password field or (2) a password that has been encrypted using DES or MD5 in FIPS-140 mode.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2013-2138 X.Org xdm 1.1.10, 1.1.11, and possibly other versions, when performing authentication using certain implementations of the crypt API function that can return NULL, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by attempting to log into an account whose password field contains invalid characters, as demonstrated using the crypt function from glibc 2.17 and later with (1) the "!" character in the salt portion of a password field or (2) a password that has been encrypted using DES or MD5 in FIPS-140 mode.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 6, 2024, 3:27 PM
Reserved
Feb 19, 2013, 12:00 AM
Status
Modified
Published
Dec 27, 2013, 1:55 AM
Modified
Jun 16, 2026, 11:52 PM
Severity
Low
Public date
Jun 11, 2013, 12:00 AM