{"id":"UBUNTU-CVE-2013-4122","details":"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triggers a NULL pointer dereference.","modified":"2026-02-04T04:11:48.542019Z","published":"2013-07-18T00:00:00Z","withdrawn":"2025-07-18T16:42:54Z","related":["USN-1988-1","USN-2755-1"],"upstream":["CVE-2013-4122"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-4122"},{"type":"REPORT","url":"http://openwall.com/lists/oss-security/2013/07/12/3"},{"type":"REPORT","url":"http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-1988-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2755-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-4122"}],"affected":[{"package":{"name":"cyrus-sasl2","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/cyrus-sasl2@2.1.25.dfsg1-17?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.25.dfsg1-17"}]}],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.25.dfsg1-17","binary_name":"cyrus-sasl2-dbg"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"cyrus-sasl2-doc"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"cyrus-sasl2-heimdal-dbg"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"cyrus-sasl2-mit-dbg"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-2"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-dev"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules-db"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules-gssapi-heimdal"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules-gssapi-mit"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules-ldap"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules-otp"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"libsasl2-modules-sql"},{"binary_version":"2.1.25.dfsg1-17","binary_name":"sasl2-bin"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-4122.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}