Vulnerability Report

CVE-2009-0025

Title: Isc Bind Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2009-0025.

CWE Category CWE-287

Published Date Jan 07, 2009

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 6.8 CVSS v2.0

Exploit Probability (EPSS)

6.86%

Vulnerability Summary

CVE-2009-0025: BIND 9.6.0, 9.5.1, 9.5.0, 9.4.3, and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

Impacted Vendors

isc 1

Reference Links

http://groups.google.com/group/comp.protocols.dns.bind/browse_thread/thread/49ef622c8329fd33 http://lists.apple.com/archives/security-announce/2009/May/msg00002.html http://marc.info/?l=bugtraq&m=141879471518471&w=2 http://secunia.com/advisories/33494 http://secunia.com/advisories/33546 http://secunia.com/advisories/33551 http://secunia.com/advisories/33559 http://secunia.com/advisories/33683 http://secunia.com/advisories/33882 http://secunia.com/advisories/35074 http://security.freebsd.org/advisories/FreeBSD-SA-09:04.bind.asc http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.540362 http://sunsolve.sun.com/search/document.do?assetkey=1-26-250846-1 http://support.apple.com/kb/HT3549 http://support.avaya.com/elmodocs2/security/ASA-2009-045.htm http://wiki.rpath.com/Advisories:rPSA-2009-0009 http://www.ocert.org/advisories/ocert-2008-016.html http://www.openbsd.org/errata44.html#008_bind http://www.securityfocus.com/archive/1/499827/100/0/threaded http://www.securityfocus.com/archive/1/500207/100/0/threaded http://www.securityfocus.com/archive/1/502322/100/0/threaded http://www.securityfocus.com/bid/33151 http://www.us-cert.gov/cas/techalerts/TA09-133A.html http://www.vmware.com/security/advisories/VMSA-2009-0004.html http://www.vupen.com/english/advisories/2009/0043 http://www.vupen.com/english/advisories/2009/0366 http://www.vupen.com/english/advisories/2009/0904 http://www.vupen.com/english/advisories/2009/1297 https://issues.rpath.com/browse/RPL-2938 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10879 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5569 https://www.isc.org/software/bind/advisories/cve-2009-0025 https://www.redhat.com/archives/fedora-package-announce/2009-January/msg00393.html http://groups.google.com/group/comp.protocols.dns.bind/browse_thread/thread/49ef622c8329fd33 http://lists.apple.com/archives/security-announce/2009/May/msg00002.html http://marc.info/?l=bugtraq&m=141879471518471&w=2 http://secunia.com/advisories/33494 http://secunia.com/advisories/33546 http://secunia.com/advisories/33551 http://secunia.com/advisories/33559 http://secunia.com/advisories/33683 http://secunia.com/advisories/33882 http://secunia.com/advisories/35074 http://security.freebsd.org/advisories/FreeBSD-SA-09:04.bind.asc http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.540362 http://sunsolve.sun.com/search/document.do?assetkey=1-26-250846-1 http://support.apple.com/kb/HT3549 http://support.avaya.com/elmodocs2/security/ASA-2009-045.htm http://wiki.rpath.com/Advisories:rPSA-2009-0009 http://www.ocert.org/advisories/ocert-2008-016.html http://www.openbsd.org/errata44.html#008_bind http://www.securityfocus.com/archive/1/499827/100/0/threaded http://www.securityfocus.com/archive/1/500207/100/0/threaded http://www.securityfocus.com/archive/1/502322/100/0/threaded http://www.securityfocus.com/bid/33151 http://www.us-cert.gov/cas/techalerts/TA09-133A.html http://www.vmware.com/security/advisories/VMSA-2009-0004.html http://www.vupen.com/english/advisories/2009/0043 http://www.vupen.com/english/advisories/2009/0366 http://www.vupen.com/english/advisories/2009/0904 http://www.vupen.com/english/advisories/2009/1297 https://issues.rpath.com/browse/RPL-2938 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10879 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5569 https://www.isc.org/software/bind/advisories/cve-2009-0025 https://www.redhat.com/archives/fedora-package-announce/2009-January/msg00393.html

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

6.8

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-0025 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

January 07, 2009 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Stack

No specific products linked.