CVE-2013-2179

Exp

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.

Published: 2013-12-27 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-2179 is rated High Exploit Risk (62.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.44%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.68% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2013-2179

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-2179

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.76% 2.44% +1.68%
2 2025-03-30 1.36% 0.76% -0.60%
3 2025-03-29 — 1.36% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-2179

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-2179

OS Trackers for CVE-2013-2179

vendor priority summary link
debian unimportant CVE-2013-2179 unimportant priority: Debian including 1 source packages (xdm), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-2179
redhat low — https://access.redhat.com/security/cve/CVE-2013-2179
ubuntu medium CVE-2013-2179 medium priority: Ubuntu including 1 source packages (xdm), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): not-affected 3, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2013-2179

Affected software / configurations for CVE-2013-2179

Vendor Product Version Raw CPE
x x_display_manager 1.1.10 cpe:2.3:a:x:x_display_manager:1.1.10:*:*:*:*:*:*:*
x x_display_manager 1.1.11 cpe:2.3:a:x:x_display_manager:1.1.11:*:*:*:*:*:*:*

References for CVE-2013-2179

cvelogic Threat Intelligence