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    CVE-2004-2761

    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.

    Published:Dec 30, 2008
    Last Modified:May 28, 2026
    EPS:Jan 5, 2009
    EPSS Score:0.06226
    CVSS Score:9.8

    Affected Products

    Vendor
    Ietf
    Product
    Md5
    Vendor
    Ietf
    Product
    X.509 Certificate
    Vendor
    Redhat
    Product
    Certificate System

    Exploits

    https://www.exploit-db.com/exploits/24807

    Common Weakness Enumeration

    CWE-328 Use of Weak Hash

    References

    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://secunia.com/advisories/33826
    http://secunia.com/advisories/34281
    http://secunia.com/advisories/42181
    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
    http://www.microsoft.com/technet/security/advisory/961509.mspx
    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/SoftIntCodeSign/
    http://www.win.tue.nl/hashclash/rogue-ca/
    https://blogs.verisign.com/ssl-blog/2008/12/on_md5_vulnerabilities_and_mit.php
    https://bugzilla.redhat.com/show_bug.cgi?id=648886
    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
    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://secunia.com/advisories/33826
    http://secunia.com/advisories/34281
    http://secunia.com/advisories/42181
    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
    http://www.microsoft.com/technet/security/advisory/961509.mspx
    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/SoftIntCodeSign/
    http://www.win.tue.nl/hashclash/rogue-ca/
    https://blogs.verisign.com/ssl-blog/2008/12/on_md5_vulnerabilities_and_mit.php
    https://bugzilla.redhat.com/show_bug.cgi?id=648886
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High