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Secunia Security Advisory 50888

Secunia Security Advisory 50888
Posted Oct 8, 2012
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in hostapd, which can be exploited by malicious people to cause a DoS (Denial of Service).

tags | advisory, denial of service
MD5 | 2412c41d452c72c19c81618b83145a24

Secunia Security Advisory 50888

Change Mirror Download
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The final version of the CSI 6.0 has been released.
Find out why this is not just another Patch Management solution: http://secunia.com/blog/325/

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TITLE:
hostapd EAP-TLS Message Handling Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA50888

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/50888/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=50888

RELEASE DATE:
2012-10-08

DISCUSS ADVISORY:
http://secunia.com/advisories/50888/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/50888/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=50888

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in hostapd, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to a boundary error within the
"eap_server_tls_process_fragment()" function
(eap_server/eap_server_tls_common.c) when handling fragment data
within TLS messages. This can be exploited to cause a buffer overflow
and crash the service via a specially crafted EAP-TLS message.

Successful exploitation requires that hostapd is configured to use
the internal EAP authentication server.

The vulnerability is reported in versions 0.6 through 1.0.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Timo Warns, PRESENSE Technologies.

ORIGINAL ADVISORY:
PRESENSE Technologies (PRE-SA-2012-07):
http://www.pre-cert.de/advisories/PRE-SA-2012-07.txt

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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