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Last updated: 2/10/2016 7:20:20 PM

CVE Publication rate: 12.57

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Vulnerability Workload Index: 4.93
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National Cyber Awareness System

Vulnerability Summary for CVE-2006-2940

Original release date: 09/28/2006
Last revised: 10/22/2012


OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large (1) "public exponent" or (2) "public modulus" values in X.509 certificates that require extra time to process when using RSA signature verification.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.8 HIGH
Impact Subscore: 6.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (03/14/2007)
Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.

References to Advisories, Solutions, and Tools

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External Source: SUNALERT
Name: 201534
External Source: BID
Name: 20247
External Source: OPENBSD
Name: [3.9] 20061007 013: SECURITY FIX: October 7, 2006
External Source: CONFIRM
Name: http://docs.info.apple.com/article.html?artnum=304829
External Source: VUPEN
Name: ADV-2006-4980
External Source: CONFIRM
Name: http://support.attachmate.com/techdocs/2374.html
External Source: OVAL
Name: oval:org.mitre.oval:def:10311
External Source: MLIST
Name: [security-announce] 20080317 VMSA-2008-0005 Updated VMware Workstation, VMware Player, VMware Server, VMware ACE, and VMware Fusion resolve critical security issues
External Source: CONFIRM
Name: http://www.arkoon.fr/upload/alertes/41AK-2006-08-FR-1.1_SSL360_OPENSSL_ASN1.pdf
External Source: GENTOO
Name: GLSA-200610-11
External Source: SGI
Name: 20061001-01-P
External Source: CONFIRM
Name: http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html
External Source: CONFIRM
Name: http://www.openssl.org/news/secadv_20060928.txt
External Source: APPLE
Name: APPLE-SA-2006-11-28
External Source: UBUNTU
Name: USN-353-1
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2006-260.htm
External Source: CONFIRM
Name: http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html
External Source: BUGTRAQ
Name: 20060928 rPSA-2006-0175-1 openssl openssl-scripts
External Source: CONFIRM
Name: http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html
External Source: VUPEN
Name: ADV-2007-0343
External Source: SECTRACK
Name: 1016943
External Source: HP
Name: SSRT061239
External Source: XF
Name: openssl-publickey-dos(29230)
External Source: CONFIRM
Name: http://kolab.org/security/kolab-vendor-notice-11.txt
External Source: CONFIRM
Name: http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html
External Source: UBUNTU
Name: USN-353-2
External Source: HP
Name: SSRT061213
External Source: HP
Name: HPSBOV02683
External Source: CONFIRM
Name: http://www.vmware.com/support/player2/doc/releasenotes_player2.html
External Source: VUPEN
Name: ADV-2006-4417
External Source: CISCO
Name: 20061108 Multiple Vulnerabilities in OpenSSL library
External Source: HP
Name: SSRT071299
External Source: VUPEN
Name: ADV-2006-4329
External Source: REDHAT
Name: RHSA-2008:0629
External Source: VUPEN
Name: ADV-2006-4327
External Source: CONFIRM
Name: http://openvpn.net/changelog.html
External Source: SLACKWARE
Name: SSA:2006-272-01
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/cpujan2007-101493.html
External Source: VUPEN
Name: ADV-2007-2783
External Source: VUPEN
Name: ADV-2007-1401
External Source: VUPEN
Name: ADV-2006-3936
External Source: FREEBSD
Name: FreeBSD-SA-06:23.openssl
External Source: CISCO
Name: 20061108 Multiple Vulnerabilities in OpenSSL Library
External Source: VUPEN
Name: ADV-2006-3820
External Source: NETBSD
Name: NetBSD-SA2008-007
External Source: CONFIRM
Name: http://www.vmware.com/support/player/doc/releasenotes_player.html
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2006-220.htm
External Source: CONFIRM
Name: http://www.vmware.com/security/advisories/VMSA-2008-0005.html
External Source: CONFIRM
Name: http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html
External Source: MANDRIVA
Name: MDKSA-2006:178
External Source: VUPEN
Name: ADV-2008-2396
External Source: MLIST
Name: [bind-announce] 20061103 Internet Systems Consortium Security Advisory. [revised]
External Source: MANDRIVA
Name: MDKSA-2006:172
External Source: OPENPKG
Name: OpenPKG-SA-2006.021
US-CERT Vulnerability Note: CERT
Name: TA06-333A
External Source: REDHAT
Name: RHSA-2006:0695
Type: Advisory
External Source: CONFIRM
Name: http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227
External Source: BUGTRAQ
Name: 20070110 VMware ESX server security updates
External Source: HP
Name: SSRT061275
External Source: DEBIAN
Name: DSA-1185
External Source: CONFIRM
Name: http://www.serv-u.com/releasenotes/
External Source: CONFIRM
Name: http://www.vmware.com/support/server/doc/releasenotes_server.html
External Source: VUPEN
Name: ADV-2006-4401
External Source: CONFIRM
Name: http://www.vmware.com/support/ace2/doc/releasenotes_ace2.html
External Source: SUNALERT
Name: 102747
External Source: SUSE
Name: SUSE-SR:2006:024
External Source: CONFIRM
Name: http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html
External Source: VUPEN
Name: ADV-2008-0905
External Source: DEBIAN
Name: DSA-1195
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-1633
External Source: MANDRIVA
Name: MDKSA-2006:177
External Source: SUNALERT
Name: 200585
External Source: BID
Name: 28276
External Source: VUPEN
Name: ADV-2006-3869
External Source: VUPEN
Name: ADV-2006-4264
External Source: SUNALERT
Name: 102668
External Source: FULLDISC
Name: 20060928 [SECURITY] OpenSSL 0.9.8d and 0.9.7l released
External Source: VUPEN
Name: ADV-2007-2315
External Source: VUPEN
Name: ADV-2006-4019
External Source: OSVDB
Name: 29261
External Source: CONFIRM
Name: http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html
External Source: GENTOO
Name: GLSA-200612-11
External Source: BUGTRAQ
Name: 20080318 VMSA-2008-0005 Updated VMware Workstation, VMware Player, VMware Server, VMware ACE, and VMware Fusion resolve critical security issues
External Source: BUGTRAQ
Name: 20060929 rPSA-2006-0175-2 openssl openssl-scripts
External Source: SUSE
Name: SUSE-SA:2006:058
External Source: MISC
Name: http://www.uniras.gov.uk/niscc/docs/re-20060928-00661.pdf?lang=en
External Source: VUPEN
Name: ADV-2006-4750
External Source: BID
Name: 22083
External Source: CONFIRM
Name: http://www.xerox.com/downloads/usa/en/c/cert_ESSNetwork_XRX07001_v1.pdf
External Source: CONFIRM
Name: http://issues.rpath.com/browse/RPL-613
External Source: SECTRACK
Name: 1017522
External Source: VUPEN
Name: ADV-2006-4036
External Source: VUPEN
Name: ADV-2006-3860
External Source: CONFIRM
Name: http://www.arkoon.fr/upload/alertes/37AK-2006-06-FR-1.1_FAST360_OPENSSL_ASN1.pdf
External Source: CONFIRM
Name: http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html
External Source: VUPEN
Name: ADV-2006-3902

References to Check Content

Identifier: oval:org.mitre.oval:def:10311
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:openssl:openssl:0.9.7
* cpe:/a:openssl:openssl:0.9.7a
* cpe:/a:openssl:openssl:0.9.7b
* cpe:/a:openssl:openssl:0.9.7c
* cpe:/a:openssl:openssl:0.9.7d
* cpe:/a:openssl:openssl:0.9.7e
* cpe:/a:openssl:openssl:0.9.7f
* cpe:/a:openssl:openssl:0.9.7g
* cpe:/a:openssl:openssl:0.9.7h
* cpe:/a:openssl:openssl:0.9.7i
* cpe:/a:openssl:openssl:0.9.7j
* cpe:/a:openssl:openssl:0.9.7k
* cpe:/a:openssl:openssl:0.9.8
* cpe:/a:openssl:openssl:0.9.8a
* cpe:/a:openssl:openssl:0.9.8b
* cpe:/a:openssl:openssl:0.9.8c
* cpe:/a:openssl:openssl:0.9.6m
* cpe:/a:openssl:openssl:0.9.6g
* cpe:/a:openssl:openssl:0.9.6f
* cpe:/a:openssl:openssl:0.9.6i
* cpe:/a:openssl:openssl:0.9.6h
* cpe:/a:openssl:openssl:0.9.6c
* cpe:/a:openssl:openssl:0.9.6e
* cpe:/a:openssl:openssl:0.9.6d
* cpe:/a:openssl:openssl:0.9.6k
* cpe:/a:openssl:openssl:0.9.6j
* cpe:/a:openssl:openssl:0.9.6l
* cpe:/a:openssl:openssl:0.9.5a:beta2
* cpe:/a:openssl:openssl:0.9.6b
* cpe:/a:openssl:openssl:0.9.6a
* cpe:/a:openssl:openssl:0.9.6a:beta1
* cpe:/a:openssl:openssl:0.9.6a:beta2
* cpe:/a:openssl:openssl:0.9.6a:beta3
* cpe:/a:openssl:openssl:0.9.6
* cpe:/a:openssl:openssl:0.9.6:beta1
* cpe:/a:openssl:openssl:0.9.6:beta2
* cpe:/a:openssl:openssl:0.9.6:beta3
* cpe:/a:openssl:openssl:0.9.5:beta2
* cpe:/a:openssl:openssl:0.9.5a
* cpe:/a:openssl:openssl:0.9.5a:beta1
* cpe:/a:openssl:openssl:0.9.3a
* cpe:/a:openssl:openssl:0.9.4
* cpe:/a:openssl:openssl:0.9.5
* cpe:/a:openssl:openssl:0.9.5:beta1
* cpe:/a:openssl:openssl:0.9.3
* cpe:/a:openssl:openssl:0.9.2b
* cpe:/a:openssl:openssl:0.9.1c

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)