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TITLE:
OpenSSL ASN.1 MIME Header Parsing NULL Pointer Dereference
Vulnerability

SECUNIA ADVISORY ID:
SA48153

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48153/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48153

RELEASE DATE:
2012-02-28

DISCUSS ADVISORY:
http://secunia.com/advisories/48153/#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/48153/

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=48153

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 OpenSSL, which can be exploited
by malicious people to cause a DoS (Denial of Service) of the
application using the library.

The vulnerability is caused due to a NULL-pointer dereference error
in the "mime_hdr_cmp()" function (crypto/asn1/asn_mime.c) when
parsing certain MIME headers and can be exploited to cause a crash.

The vulnerability is reported in versions 0.9.7i, 0.9.8t, and 1.0.0g.
Other versions may also be affected.

SOLUTION:
Fixed in the CVS repository.

PROVIDED AND/OR DISCOVERED BY:
Reported by Mats Nilsson to the openssl-dev mailing list.

ORIGINAL ADVISORY:
Mats Nilsson:
http://marc.info/?l=openssl-dev&m=115685408414194&w=2

OpenSSL:
http://cvs.openssl.org/chngview?cn=22144

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/

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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.

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