The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2017:3379 advisory.

    The System Security Services Daemon (SSSD) service provides a set of daemons to manage access to remote     directories and authentication mechanisms. It also provides the Name Service Switch (NSS) and the     Pluggable Authentication Modules (PAM) interfaces toward the system, and a pluggable back-end system to     connect to multiple different account sources.

    Security Fix(es):

    * It was found that sssd's sysdb_search_user_by_upn_res() function 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.
    (CVE-2017-12173)

    This issue was discovered by Sumit Bose (Red Hat).

    Bug Fix(es):

    * Previously, SSSD's krb5 provider did not respect changed UIDs in ID views overriding the default view.
    Consequently, Kerberos credential caches were created with the incorrect, original UID, and processes of     the user were not able to find the changed UID. With this update, SSSD's krb5 provider is made aware of     the proper ID view name and respects the ID override data. As a result, the Kerberos credential cache is     now created with the expected UID, and the processes can find it. (BZ#1508972)

    * Previously, the list of cache request domains was sometimes freed in the middle of a cache request     operation due to the refresh domains request, as they both were using the same list. As a consequence, a     segmentation fault sometimes occurred in SSSD. With this update, SSSD uses a copy of the cache request     domains' list for each cache request. As a result, SSSD no longer crashes in this case. (BZ#1509177)

    * Previously, the calls provided by SSSD to send data to the Privilege Attribute Certificate (PAC)     responder did not use a mutex or any other means to serialize access to the PAC responder from a single     process. When multithreaded applications overran the PAC responder with multiple parallel requests, some     threads did not receive a proper reply. Consequently, such threads only resumed work after waiting 5     minutes for a response. This update configures mutex to serialize access to the PAC responder socket for     multithreaded applications. As a result, all threads now get a proper and timely reply. (BZ#1506682)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

Analytics

RHEL 7 : sssd (RHSA-2017:3379)

high Nessus Plugin ID 105017

Version 3.14

Version 3.13

Version 3.14 Nov 5, 2024, 12:50 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Plugin metadata Plugin Feed: 202411051250
Version 3.13 Apr 28, 2024, 3:17 AM CVSSv2 score source (set to "CVE-2017-12173") Detection (updated detection logic) Plugin metadata Reference Plugin Feed: 202404280317