Vulnerability in Cmu Cyrus-Sasl
CVE-2013-4122
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 · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.036 (89.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- Cmu Cyrus-Sasl — versions 1.5.28, 2.1.19, 2.1.20
- GNU Glibc — versions 2.2, 2.2.1, 2.2.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.cyrusimap.org/cyrus-sasl/commit/ (Exploit, Patch)
- www.linuxquestions.org/questions/slackware-14/[slackware-current]-glibc-2-17-sh…
- security.gentoo.org/glsa/glsa-201309-01.xml (vendor-advisory)
- www.ubuntu.com/usn/USN-2755-1 (vendor-advisory)
- www.openwall.com/lists/oss-security/2013/07/15/1 (mailing-list)
- www.openwall.com/lists/oss-security/2013/07/13/1 (mailing-list)
- www.openwall.com/lists/oss-security/2013/07/12/6 (mailing-list)
- www.openwall.com/lists/oss-security/2013/07/12/3 (mailing-list)
- www.debian.org/security/2015/dsa-3368 (vendor-advisory)
Frequently asked questions
- What is CVE-2013-4122?
- CVE-2013-4122 is a vulnerability in Cmu Cyrus-Sasl, classified under CWE-189. Published 2013-10-27.
- Is CVE-2013-4122 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.