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TITLE:
OpenSSL "asn1_d2i_read_bio()" DER Format Data Processing
Vulnerability

SECUNIA ADVISORY ID:
SA48847

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48847/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48847

RELEASE DATE:
2012-04-19

DISCUSS ADVISORY:
http://secunia.com/advisories/48847/#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/48847/

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=48847

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:
Tavis Ormandy has reported a vulnerability in OpenSSL, which can be
exploited by malicious people to potentially compromise an
application using the library.

The vulnerability is caused due to a type casting error in the
"asn1_d2i_read_bio()" function when processing DER format data and
can be exploited to cause a heap-based buffer overflow.

Successful exploitation may allow execution of arbitrary code, but
may require a target to be running on a 64-bit system.

NOTE: Applications that use PEM only routines are not affected.

The vulnerability is reported in versions prior to 0.9.8v, 1.0.1a,
and 1.0.0i.

SOLUTION:
Update to version 0.9.8v, 1.0.1a, and 1.0.0i.

PROVIDED AND/OR DISCOVERED BY:
Tavis Ormandy, Google Security Team

ORIGINAL ADVISORY:
OpenSSL:
http://www.openssl.org/news/secadv_20120419.txt

Tavis Ormandy:
http://seclists.org/fulldisclosure/2012/Apr/210

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:
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vulnerabilities.

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