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CVE-2013-4122

15
FAUCET Score

CVE-2013-4122 describes a denial-of-service vulnerability in Cyrus SASL versions 2.1.23, 2.1.26, and earlier, affecting systems using glibc 2.17 and later. This flaw allows remote attackers to crash a thread and consume resources by providing an invalid salt or, with FIPS-140 enabled, a DES or MD5 encrypted password, leading to a NULL pointer dereference. With a CVSS score of 4.3, this vulnerability has a network attack vector and medium attack complexity, resulting in a partial availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.26CPE matchmatch criteria
cpe:2.3:a:cmu:cyrus-sasl:*:*:*:*:*:*:*:*
1.5.28CPE matchmatch criteria
cpe:2.3:a:cmu:cyrus-sasl:1.5.28:*:*:*:*:*:*:*
2.1.19CPE matchmatch criteria
cpe:2.3:a:cmu:cyrus-sasl:2.1.19:*:*:*:*:*:*:*
2.1.20CPE matchmatch criteria
cpe:2.3:a:cmu:cyrus-sasl:2.1.20:*:*:*:*:*:*:*
2.1.21CPE matchmatch criteria
cpe:2.3:a:cmu:cyrus-sasl:2.1.21:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.59%
Probability of exploitation in next 30 days
EPSS Percentile
88.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0359 is in the 84th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2013-4122Moderate

cyrus-sasl: NULL pointer dereference (DoS) when glibc v.2.17 or FIPS-140 enabled Linux system used

Jul 12, 2013

References

git.cyrusimap.org / cyrus-sasl/commit
ExploitPatch
security.gentoo.org / glsa/glsa-201309-01.xml
linuxquestions.org / questions/slackware-14/%5Bslackware-current%5D-glibc-2-17-shadow-and-other-penumbrae-4175461061
debian.org / security/2015/dsa-3368
openwall.com / lists/oss-security/2013/07/12/3
openwall.com / lists/oss-security/2013/07/12/6
openwall.com / lists/oss-security/2013/07/13/1
openwall.com / lists/oss-security/2013/07/15/1
ubuntu.com / usn/USN-2755-1