OpenSSL Multiple Vulnerabilities in Client Certificate Handling - Secunia Advisories - Vulnerability Intelligence

OpenSSL Multiple Vulnerabilities in Client Certificate Handling
Secunia Advisory:	SA9886	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2003-10-01
Last Update:	2003-11-04
Popularity:	15,465 views

Critical:	Highly critical
Impact:	DoS System access
Where:	From remote
Solution Status:	Vendor Patch

Software:	OpenSSL 0.9.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2003-0545 CVE-2003-0543 CVE-2003-0544

Description: Multiple vulnerabilities have been identified in OpenSSL, which potentially allow malicious people to cause a DoS (Denial of Service) or to compromise a vulnerable system. 1) ASN.1 encodings rejected by the parser because they are invalid may cause a deallocation of memory. It is currently unknown if this can be exploited to execute arbitrary code or merely cause a DoS. 2) It is possible to cause an out of bounds read by supplying unusual ASN.1 tag values. This may cause a DoS. 3) If OpenSSL is in debug mode, an invalid public key in a certificate may cause the verify code to crash. This could lead to a DoS against systems running in debug mode. An error causes OpenSSL to parse and handle client certificates even when OpenSSL isn't configured to do so. Version 0.9.6j and prior are vulnerable (0.9.6 versions are not affected by issue 1). Version 0.9.7b and prior are vulnerable. Solution: Update to version 0.9.6k or 0.9.7c. OpenSSL 0.9.6k: http://www.openssl.org/source/openssl-0.9.6k.tar.gz http://www.openssl.org/source/openssl-engine-0.9.6k.tar.gz OpenSSL 0.9.7c: http://www.openssl.org/source/openssl-0.9.7c.tar.gz Provided and/or discovered by: NISCC Changelog: 2003-10-01: Updated references to different CERT Vulnerability Notes. Updated affected versions. 2003-11-04: Updated "Description" section. Original Advisory: http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm http://www.openssl.org/news/secadv_20030930.txt Other References: http://www.kb.cert.org/vuls/id/732952 http://www.kb.cert.org/vuls/id/104280 http://www.kb.cert.org/vuls/id/935264 http://www.kb.cert.org/vuls/id/255484 http://www.kb.cert.org/vuls/id/380864 http://www.kb.cert.org/vuls/id/686224 http://www.cert.org/advisories/CA-2003-26.html

Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released. Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise. Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

Latest Advisories

10th Oct, 2008

New advisories:	15
New vulnerabilities:	83
Updated advisories:	41

Moderately // 770 views

ScriptsEz Easy Image Downloader "id" File Disclosure Vulnerability

Moderately // 752 views

Built2go Real Estate Listings "event_id" SQL Injection

Highly // 1,099 views

Sun Java System Web Proxy Server FTP Subsystem Buffer Overflow

Moderately // 788 views

Red Hat update for cups

Highly // 798 views

DFF PHP Framework API "DFF_config[dir_incl ude]" File Inclusion Vulnerabilities

Not // 872 views

FUJITSU Interstage Products Apache Tomcat Security Bypass

Moderately // 1,150 views

Apple Mac OS X Security Update Fixes Multiple Vulnerabilities

Moderately // 753 views

Fedora update for condor

Moderately // 1,188 views

CUPS Multiple Vulnerabilities

Not // 817 views

Gentoo Portage Insecure Python Module Search Path Security Issue

Solutions | More...

Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com. Ideas, suggestions, and other feedback are most welcome.