OpenSSL ASN.1 Parsing Denial of Service Vulnerability - Secunia Advisories - Vulnerability Intelligence

OpenSSL ASN.1 Parsing Denial of Service Vulnerability
Secunia Advisory:	SA10133	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2003-11-04
Last Update:	2003-11-05
Popularity:	11,997 views

Critical:	Moderately critical
Impact:	DoS
Where:	From remote
Solution Status:	Vendor Patch

Software:	OpenSSL 0.9.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2003-0851

Description: A vulnerability has been reported in OpenSSL, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an error when parsing certain ASN.1 tags. This can be exploited to trigger a large recursion, which may cause OpenSSL to crash on Windows systems. The vulnerability is related to the vulnerabilities described in: SA9886 Solution: Update to version 0.9.6l or 0.9.7c and recompile any applications statically linked to OpenSSL libraries. OpenSSL 0.9.6l: http://www.openssl.org/source/openssl-engine-0.9.6l.tar.gz http://www.openssl.org/source/openssl-0.9.6l.tar.gz OpenSSL 0.9.7c: http://www.openssl.org/source/openssl-0.9.7c.tar.gz Provided and/or discovered by: Novell Changelog: 2003-11-05: Added link to CERT vulnerability note. Original Advisory: Denial of Service in ASN.1 parsing: http://www.openssl.org/news/secadv_20031104.txt Other References: SA9886: http://secunia.com/advisories/9886/ CERT VU#412478: http://www.kb.cert.org/vuls/id/412478

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