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Bug 633820 (CVE-2017-12173) - sys-auth/sssd: unsanitized input when searching in local cache database (CVE-2017-12173)
Summary: sys-auth/sssd: unsanitized input when searching in local cache database (CVE-...
Alias: CVE-2017-12173
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [noglsa cve]
Depends on:
Reported: 2017-10-09 09:03 UTC by Agostino Sarubbo
Modified: 2018-10-05 13:06 UTC (History)
4 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Agostino Sarubbo gentoo-dev 2017-10-09 09:03:45 UTC
From ${URL} :

SSSD stores its cached data in an LDAP like local database file using libldb. To lookup cached data LDAP search filters like '(objectClass=user)(name=user_name)' are used. However, in 
sysdb_search_user_by_upn_res(), the input is not sanitized and allows to manipulate the search filter for cache lookups.

This would allow a logged in user to discover the password hash of a different user.

@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.
Comment 1 Thomas Deutschmann gentoo-dev Security 2018-08-05 23:03:39 UTC
Upstream patch:

Included in sssd-1_16_2 sssd-1_16_1 sssd-1_16_0 release.
Comment 2 Larry the Git Cow gentoo-dev 2018-10-05 13:03:25 UTC
The bug has been referenced in the following commit(s):

commit 83537e5d00b6c72da846c7f75f30cabd303677e6
Author:     Mikle Kolyada <>
AuthorDate: 2018-10-05 13:02:56 +0000
Commit:     Mikle Kolyada <>
CommitDate: 2018-10-05 13:02:56 +0000

    sys-auth/sssd: mark stable
    Signed-off-by: Mikle Kolyada <>
    Package-Manager: Portage-2.3.49, Repoman-2.3.11

 sys-auth/sssd/sssd-1.16.3.ebuild | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Comment 3 Mikle Kolyada archtester Gentoo Infrastructure gentoo-dev Security 2018-10-05 13:06:38 UTC