Description

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.

INFO

Published Date :

Sept. 28, 2006, 6:07 p.m.

Last Modified :

Oct. 18, 2018, 4:44 p.m.

Remotely Exploitable :

Yes !

Impact Score :

6.9

Exploitability Score :

10.0
Public PoC/Exploit Available at Github

CVE-2006-2940 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2006-2940 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Openssl openssl
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2006-2940.

URL Resource
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2008-007.txt.asc
ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc
http://docs.info.apple.com/article.html?artnum=304829
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01118771
http://issues.rpath.com/browse/RPL-613
http://itrc.hp.com/service/cki/docDisplay.do?docId=c00805100
http://itrc.hp.com/service/cki/docDisplay.do?docId=c00849540
http://kolab.org/security/kolab-vendor-notice-11.txt
http://lists.apple.com/archives/security-announce/2006/Nov/msg00001.html
http://lists.grok.org.uk/pipermail/full-disclosure/2006-September/049715.html
http://lists.vmware.com/pipermail/security-announce/2008/000008.html
http://marc.info/?l=bind-announce&m=116253119512445&w=2
http://marc.info/?l=bugtraq&m=130497311408250&w=2
http://openbsd.org/errata.html#openssl2
http://openvpn.net/changelog.html
http://secunia.com/advisories/22094 Vendor Advisory
http://secunia.com/advisories/22116 Vendor Advisory
http://secunia.com/advisories/22130 Vendor Advisory
http://secunia.com/advisories/22165 Vendor Advisory
http://secunia.com/advisories/22166 Vendor Advisory
http://secunia.com/advisories/22172 Vendor Advisory
http://secunia.com/advisories/22186 Vendor Advisory
http://secunia.com/advisories/22193 Vendor Advisory
http://secunia.com/advisories/22207 Vendor Advisory
http://secunia.com/advisories/22212 Vendor Advisory
http://secunia.com/advisories/22216 Vendor Advisory
http://secunia.com/advisories/22220 Vendor Advisory
http://secunia.com/advisories/22240 Vendor Advisory
http://secunia.com/advisories/22259 Vendor Advisory
http://secunia.com/advisories/22260 Vendor Advisory
http://secunia.com/advisories/22284 Vendor Advisory
http://secunia.com/advisories/22298
http://secunia.com/advisories/22330 Vendor Advisory
http://secunia.com/advisories/22385 Vendor Advisory
http://secunia.com/advisories/22460 Vendor Advisory
http://secunia.com/advisories/22487
http://secunia.com/advisories/22500 Vendor Advisory
http://secunia.com/advisories/22544 Vendor Advisory
http://secunia.com/advisories/22626
http://secunia.com/advisories/22671
http://secunia.com/advisories/22758
http://secunia.com/advisories/22772
http://secunia.com/advisories/22799
http://secunia.com/advisories/23038
http://secunia.com/advisories/23155
http://secunia.com/advisories/23280
http://secunia.com/advisories/23309
http://secunia.com/advisories/23340
http://secunia.com/advisories/23351
http://secunia.com/advisories/23680
http://secunia.com/advisories/23794
http://secunia.com/advisories/23915
http://secunia.com/advisories/24930
http://secunia.com/advisories/24950
http://secunia.com/advisories/25889
http://secunia.com/advisories/26329
http://secunia.com/advisories/26893
http://secunia.com/advisories/30124
http://secunia.com/advisories/31492
http://secunia.com/advisories/31531
http://security.freebsd.org/advisories/FreeBSD-SA-06:23.openssl.asc
http://security.gentoo.org/glsa/glsa-200610-11.xml
http://securitytracker.com/id?1016943
http://securitytracker.com/id?1017522
http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.676946
http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102668-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102747-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-200585-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-201534-1
http://support.attachmate.com/techdocs/2374.html
http://support.avaya.com/elmodocs2/security/ASA-2006-220.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-260.htm
http://www.arkoon.fr/upload/alertes/37AK-2006-06-FR-1.1_FAST360_OPENSSL_ASN1.pdf
http://www.arkoon.fr/upload/alertes/41AK-2006-08-FR-1.1_SSL360_OPENSSL_ASN1.pdf
http://www.cisco.com/en/US/products/hw/contnetw/ps4162/tsd_products_security_response09186a008077af1b.html
http://www.cisco.com/warp/public/707/cisco-sr-20061108-openssl.shtml
http://www.debian.org/security/2006/dsa-1185
http://www.debian.org/security/2006/dsa-1195
http://www.gentoo.org/security/en/glsa/glsa-200612-11.xml
http://www.mandriva.com/security/advisories?name=MDKSA-2006:172
http://www.mandriva.com/security/advisories?name=MDKSA-2006:177
http://www.mandriva.com/security/advisories?name=MDKSA-2006:178
http://www.novell.com/linux/security/advisories/2006_24_sr.html
http://www.novell.com/linux/security/advisories/2006_58_openssl.html
http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.021-openssl.html
http://www.openssl.org/news/secadv_20060928.txt
http://www.oracle.com/technetwork/topics/security/cpujan2007-101493.html
http://www.osvdb.org/29261
http://www.redhat.com/support/errata/RHSA-2006-0695.html Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2008-0629.html
http://www.securityfocus.com/archive/1/447318/100/0/threaded
http://www.securityfocus.com/archive/1/447393/100/0/threaded
http://www.securityfocus.com/archive/1/456546/100/200/threaded
http://www.securityfocus.com/archive/1/489739/100/0/threaded
http://www.securityfocus.com/bid/20247
http://www.securityfocus.com/bid/22083
http://www.securityfocus.com/bid/28276
http://www.serv-u.com/releasenotes/
http://www.trustix.org/errata/2006/0054
http://www.ubuntu.com/usn/usn-353-1
http://www.ubuntu.com/usn/usn-353-2
http://www.uniras.gov.uk/niscc/docs/re-20060928-00661.pdf?lang=en
http://www.us-cert.gov/cas/techalerts/TA06-333A.html US Government Resource
http://www.vmware.com/security/advisories/VMSA-2008-0005.html
http://www.vmware.com/support/ace2/doc/releasenotes_ace2.html
http://www.vmware.com/support/esx2/doc/esx-202-200612-patch.html
http://www.vmware.com/support/esx21/doc/esx-213-200612-patch.html
http://www.vmware.com/support/esx25/doc/esx-253-200612-patch.html
http://www.vmware.com/support/esx25/doc/esx-254-200612-patch.html
http://www.vmware.com/support/player/doc/releasenotes_player.html
http://www.vmware.com/support/player2/doc/releasenotes_player2.html
http://www.vmware.com/support/server/doc/releasenotes_server.html
http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html
http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html
http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html
http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html
http://www.vupen.com/english/advisories/2006/3820
http://www.vupen.com/english/advisories/2006/3860
http://www.vupen.com/english/advisories/2006/3869
http://www.vupen.com/english/advisories/2006/3902
http://www.vupen.com/english/advisories/2006/3936
http://www.vupen.com/english/advisories/2006/4019
http://www.vupen.com/english/advisories/2006/4036
http://www.vupen.com/english/advisories/2006/4264
http://www.vupen.com/english/advisories/2006/4327
http://www.vupen.com/english/advisories/2006/4329
http://www.vupen.com/english/advisories/2006/4401
http://www.vupen.com/english/advisories/2006/4417
http://www.vupen.com/english/advisories/2006/4750
http://www.vupen.com/english/advisories/2006/4980
http://www.vupen.com/english/advisories/2007/0343
http://www.vupen.com/english/advisories/2007/1401
http://www.vupen.com/english/advisories/2007/2315
http://www.vupen.com/english/advisories/2007/2783
http://www.vupen.com/english/advisories/2008/0905/references
http://www.vupen.com/english/advisories/2008/2396
http://www.xerox.com/downloads/usa/en/c/cert_ESSNetwork_XRX07001_v1.pdf
https://exchange.xforce.ibmcloud.com/vulnerabilities/29230
https://issues.rpath.com/browse/RPL-1633
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10311
https://www2.itrc.hp.com/service/cki/docDisplay.do?docId=c00967144

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Updated: 3 weeks, 6 days ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2006-2940 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2006-2940 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Oct. 18, 2018

    Action Type Old Value New Value
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/489739/100/0/threaded [No Types Assigned]
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/447393/100/0/threaded [No Types Assigned]
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/456546/100/200/threaded [No Types Assigned]
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/447318/100/0/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/489739/100/0/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/456546/100/200/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/447393/100/0/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/447318/100/0/threaded [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 11, 2017

    Action Type Old Value New Value
    Removed Reference http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:10311 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10311 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 20, 2017

    Action Type Old Value New Value
    Removed Reference http://xforce.iss.net/xforce/xfdb/29230 [No Types Assigned]
    Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/29230 [No Types Assigned]
  • CVE Translated by [email protected]

    Oct. 20, 2016

    Action Type Old Value New Value
    Removed Translation OpenSSL 0.9.7 anterior a 0.9.7l, 0.9.8 anterior a 0.9.8d, y versiones anteriores permiten a atacantes remotos provocar una denegación de servicio (consumo de CPU) mediante ciertas claves públicas con valores largos (1) "exponentes públicos" o (2) "modulos públicos" en certificados X.509 que requieren tiempo extra para ser procesadas utilizando la firma de verificación.
    Added Translation OpenSSL 0.9.7 en versiones anteriores a 0.9.7l, 0.9.8 en versiones anteriores a 0.9.8d y versiones anteriores permite a atacantes provocar una denegación de servicio (consumo de CPU) a través de claves públicas parasitarias con valores grandes de (1) "exponente público" o (2) "módulo público" en certificados X.509 que requiere tiempo extra de procesamiento cuando utiliza una verificación de firma RSA.
  • CVE Modified by [email protected]

    Oct. 18, 2016

    Action Type Old Value New Value
    Removed Reference http://marc.theaimsgroup.com/?l=bind-announce&m=116253119512445&w=2
    Added Reference http://marc.info/?l=bind-announce&m=116253119512445&w=2
  • Initial Analysis by [email protected]

    Oct. 02, 2006

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2006-2940 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2006-2940 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

11.61 }} 2.18%

score

0.95364

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability