CVE-2013-4122

Exp

Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later, which allows remote attackers to cause a denial of service (thread crash and consumption) via (1) an invalid salt or, when FIPS-140 is enabled, a (2) DES or (3) MD5 encrypted password, which triggers a NULL pointer dereference.

Published: 2013-10-27 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4122 is rated Exploit Available (57.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.18%). 1 public exploit reference(s) are indexed (Exploit-DB). 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-2013-4122

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

Exploit prediction scoring system (EPSS) score for CVE-2013-4122

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 2025-10-15 3.12% 1.18% -1.94%
2 2025-07-04 2.41% 3.12% +0.71%
3 2025-03-30 — 2.41% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4122

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-2013-4122

OS Trackers for CVE-2013-4122

vendor priority summary link
alpine — CVE-2013-4122: 1 source package rows (cyrus-sasl); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2013-4122
debian not yet assigned CVE-2013-4122 not yet assigned priority: Debian including 1 source packages (cyrus-sasl2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-4122
gentoo normal CVE-2013-4122: 1 GLSA(s) (201309-01), 1 atom(s) (dev-libs/cyrus-sasl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4122
redhat medium — https://access.redhat.com/security/cve/CVE-2013-4122
suse medium — https://www.suse.com/security/cve/CVE-2013-4122/
ubuntu medium CVE-2013-4122 medium priority: Ubuntu including 1 source packages (cyrus-sasl2), 7 status rows across 7 suites (lucid, precise, quantal, raring, trusty, upstream, vivid): not-affected 4, released 3. https://ubuntu.com/security/CVE-2013-4122

Affected software / configurations for CVE-2013-4122

Vendor Product Version Raw CPE
cmu cyrus-sasl <= 2.1.26 cpe:2.3:a:cmu:cyrus-sasl:*:*:*:*:*:*:*:*
cmu cyrus-sasl 1.5.28 cpe:2.3:a:cmu:cyrus-sasl:1.5.28:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.19 cpe:2.3:a:cmu:cyrus-sasl:2.1.19:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.20 cpe:2.3:a:cmu:cyrus-sasl:2.1.20:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.21 cpe:2.3:a:cmu:cyrus-sasl:2.1.21:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.22 cpe:2.3:a:cmu:cyrus-sasl:2.1.22:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.23 cpe:2.3:a:cmu:cyrus-sasl:2.1.23:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.24 cpe:2.3:a:cmu:cyrus-sasl:2.1.24:*:*:*:*:*:*:*
cmu cyrus-sasl 2.1.25 cpe:2.3:a:cmu:cyrus-sasl:2.1.25:*:*:*:*:*:*:*

References for CVE-2013-4122

cvelogic Threat Intelligence