National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2004-2761 Detail

Current Description

The MD5 Message-Digest Algorithm is not collision resistant, which makes it easier for context-dependent attackers to conduct spoofing attacks, as demonstrated by attacks on the use of MD5 in the signature algorithm of an X.509 certificate.

Source:  MITRE
Description Last Modified:  01/05/2009
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

Evaluator Impact

There are four significant mitigating factors. 1) Most enterprise-class certificates, such as VeriSign’s Extended Validation SSL Certificates use the still secure SHA-1 hash function. 2) Certificates already issued with MD5 signatures are not at risk. The exploit only affects new certificate acquisitions. 3) CAs are quickly moving to replace MD5 with SHA-1. For example, VeriSign was planning to phase out MD5 by the end of January 2009. The date was pushed up due to the December proof of concept. On December 31, 2008, RapidSSL certificates shipped with SHA-1 digital signatures. 4)The researchers did not release the under-the-hood specifics of how the exploit was executed. Source - http://www.techrepublic.com/blog/it-security/the-new-md5-ssl-exploit-is-not-the-end-of-civilization-as-we-know-it/?tag=nl.e036

Vendor Statements (disclaimer)

Official Statement from Red Hat (01/07/2009)

Please see http://kbase.redhat.com/faq/docs/DOC-15379

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://blog.mozilla.com/security/2008/12/30/md5-weaknesses-could-lead-to-certificate-forgery/
http://blogs.technet.com/swi/archive/2008/12/30/information-regarding-md5-collisions-problem.aspx
http://securityreason.com/securityalert/4866
http://securitytracker.com/id?1024697
http://www.cisco.com/en/US/products/products_security_response09186a0080a5d24a.html
http://www.doxpara.com/research/md5/md5_someday.pdf
http://www.kb.cert.org/vuls/id/836068 Third Party Advisory US Government Resource
http://www.microsoft.com/technet/security/advisory/961509.mspx Mitigation Patch Vendor Advisory
http://www.phreedom.org/research/rogue-ca/
http://www.securityfocus.com/archive/1/499685/100/0/threaded
http://www.securityfocus.com/bid/33065
http://www.ubuntu.com/usn/usn-740-1
http://www.win.tue.nl/hashclash/rogue-ca/
http://www.win.tue.nl/hashclash/SoftIntCodeSign/
https://blogs.verisign.com/ssl-blog/2008/12/on_md5_vulnerabilities_and_mit.php
https://bugzilla.redhat.com/show_bug.cgi?id=648886 Issue Tracking
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05289935
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05336888
https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
https://rhn.redhat.com/errata/RHSA-2010-0837.html
https://rhn.redhat.com/errata/RHSA-2010-0838.html
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03814en_us
https://www.redhat.com/archives/fedora-package-announce/2009-February/msg00096.html

Technical Details

Vulnerability Type (View All)

Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2004-2761
NVD Published Date:
01/05/2009
NVD Last Modified:
10/19/2018