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SSSD Multiple Denial of Service Vulnerabilities

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Release Date:  2013-01-24    Last Update:  2013-03-20    Views:  1,399

Secunia Advisory SA51928

Where:

From local network

Impact:

DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Multiple vulnerabilities have been reported in SSSD, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerabilities are caused due to out-of-bounds read errors within the "sss_autofs_cmd_getautomntent()" and "sss_autofs_cmd_getautomntbyname()" functions in src/responder/autofs/autofssrv_cmd.c and the "ssh_cmd_parse_request()" function in src/responder/ssh/sshsrv_cmd.c, which can be exploited to cause a crash by sending specially crafted packages to SSSD.

NOTE: Additionally, a race condition weakness exists when handling directory trees, which can lead to modification of the directory tree.

The vulnerabilities are reported in version 1.9.3. Other versions may also be affected.


Solution:
Update to version 1.9.4.

Provided and/or discovered by:
Florian Weimer, Red Hat Product Security Team

Original Advisory:
https://fedorahosted.org/sssd/wiki/Releases/Notes-1.9.4
https://lists.fedorahosted.org/pipermail/sssd-users/2013-January/000381.html
https://fedorahosted.org/sssd/ticket/1781
https://fedorahosted.org/sssd/ticket/1782

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: SSSD Multiple Denial of Service Vulnerabilities

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