DescriptionIt was found that sssd's sysdb_search_user_by_upn_res() function before 1.16.0 did not sanitize requests when querying its local cache and was vulnerable to injection. In a centralized login environment, if a password hash was locally cached for a given user, an authenticated attacker could use this flaw to retrieve it.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs877885

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
sssd (PTS)jessie1.11.7-3fixed
jessie (security)1.11.7-3+deb8u2fixed
buster, sid1.16.3-3.1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sssdsourcejessie(not affected)
sssdsourcewheezy(not affected)


[jessie] - sssd <not-affected> (Vulnerable code introduced later)
[wheezy] - sssd <not-affected> (Vulnerable code introduced later)
Fixed by:
Introduced by (sssd-1_12_0)

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