10.0
CRITICAL
CVE-2007-0956
Krb5 Telnetd Authentication Bypass
Description

The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username beginning with a '-' character, a similar issue to CVE-2007-0882.

INFO

Published Date :

April 6, 2007, 1:19 a.m.

Last Modified :

Nov. 21, 2024, 12:27 a.m.

Remotely Exploitable :

Yes !

Impact Score :

10.0

Exploitability Score :

10.0
Affected Products

The following products are affected by CVE-2007-0956 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 Canonical ubuntu_linux
1 Debian debian_linux
1 Mit kerberos_5
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-2007-0956.

URL Resource
ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc Broken Link
http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html Broken Link
http://secunia.com/advisories/24706 Third Party Advisory
http://secunia.com/advisories/24735 Third Party Advisory
http://secunia.com/advisories/24736 Third Party Advisory
http://secunia.com/advisories/24740 Third Party Advisory
http://secunia.com/advisories/24750 Third Party Advisory
http://secunia.com/advisories/24755 Third Party Advisory
http://secunia.com/advisories/24757 Third Party Advisory
http://secunia.com/advisories/24785 Third Party Advisory
http://secunia.com/advisories/24786 Third Party Advisory
http://secunia.com/advisories/24817 Third Party Advisory
http://security.gentoo.org/glsa/glsa-200704-02.xml Third Party Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1 Broken Link
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-001-telnetd.txt Vendor Advisory
http://www.debian.org/security/2007/dsa-1276 Third Party Advisory
http://www.kb.cert.org/vuls/id/220816 Third Party Advisory US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2007:077 Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2007-0095.html Third Party Advisory
http://www.securityfocus.com/archive/1/464590/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/464666/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/464814/30/7170/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/23281 Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1017848 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/usn-449-1 Third Party Advisory
http://www.us-cert.gov/cas/techalerts/TA07-093B.html Third Party Advisory US Government Resource
http://www.vupen.com/english/advisories/2007/1218 Third Party Advisory
http://www.vupen.com/english/advisories/2007/1249 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/33414 Third Party Advisory VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046 Broken Link Third Party Advisory
ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc Broken Link
http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html Broken Link
http://secunia.com/advisories/24706 Third Party Advisory
http://secunia.com/advisories/24735 Third Party Advisory
http://secunia.com/advisories/24736 Third Party Advisory
http://secunia.com/advisories/24740 Third Party Advisory
http://secunia.com/advisories/24750 Third Party Advisory
http://secunia.com/advisories/24755 Third Party Advisory
http://secunia.com/advisories/24757 Third Party Advisory
http://secunia.com/advisories/24785 Third Party Advisory
http://secunia.com/advisories/24786 Third Party Advisory
http://secunia.com/advisories/24817 Third Party Advisory
http://security.gentoo.org/glsa/glsa-200704-02.xml Third Party Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1 Broken Link
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-001-telnetd.txt Vendor Advisory
http://www.debian.org/security/2007/dsa-1276 Third Party Advisory
http://www.kb.cert.org/vuls/id/220816 Third Party Advisory US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2007:077 Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2007-0095.html Third Party Advisory
http://www.securityfocus.com/archive/1/464590/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/464666/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/464814/30/7170/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/23281 Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1017848 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/usn-449-1 Third Party Advisory
http://www.us-cert.gov/cas/techalerts/TA07-093B.html Third Party Advisory US Government Resource
http://www.vupen.com/english/advisories/2007/1218 Third Party Advisory
http://www.vupen.com/english/advisories/2007/1249 Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/33414 Third Party Advisory VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046 Broken Link Third Party Advisory

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).

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

The following list is the news that have been mention CVE-2007-0956 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2007-0956 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
  • Modified Analysis by [email protected]

    Feb. 02, 2021

    Action Type Old Value New Value
    Removed Evaluator Solution The vendor will address this issue in the upcoming krb5-1.6.1 release.
    Removed CVSS V2 NIST (AV:N/AC:H/Au:N/C:C/I:C/A:C)
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Changed Reference Type ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc No Types Assigned ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc Broken Link
    Changed Reference Type http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html No Types Assigned http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html Broken Link
    Changed Reference Type http://secunia.com/advisories/24706 Vendor Advisory http://secunia.com/advisories/24706 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24735 No Types Assigned http://secunia.com/advisories/24735 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24736 Vendor Advisory http://secunia.com/advisories/24736 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24740 No Types Assigned http://secunia.com/advisories/24740 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24750 No Types Assigned http://secunia.com/advisories/24750 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24755 No Types Assigned http://secunia.com/advisories/24755 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24757 Vendor Advisory http://secunia.com/advisories/24757 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24785 No Types Assigned http://secunia.com/advisories/24785 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24786 No Types Assigned http://secunia.com/advisories/24786 Third Party Advisory
    Changed Reference Type http://secunia.com/advisories/24817 No Types Assigned http://secunia.com/advisories/24817 Third Party Advisory
    Changed Reference Type http://security.gentoo.org/glsa/glsa-200704-02.xml No Types Assigned http://security.gentoo.org/glsa/glsa-200704-02.xml Third Party Advisory
    Changed Reference Type http://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1 No Types Assigned http://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1 Broken Link
    Changed Reference Type http://www.debian.org/security/2007/dsa-1276 Vendor Advisory http://www.debian.org/security/2007/dsa-1276 Third Party Advisory
    Changed Reference Type http://www.mandriva.com/security/advisories?name=MDKSA-2007:077 No Types Assigned http://www.mandriva.com/security/advisories?name=MDKSA-2007:077 Third Party Advisory
    Changed Reference Type http://www.redhat.com/support/errata/RHSA-2007-0095.html No Types Assigned http://www.redhat.com/support/errata/RHSA-2007-0095.html Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/archive/1/464590/100/0/threaded No Types Assigned http://www.securityfocus.com/archive/1/464590/100/0/threaded Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securityfocus.com/archive/1/464666/100/0/threaded No Types Assigned http://www.securityfocus.com/archive/1/464666/100/0/threaded Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securityfocus.com/archive/1/464814/30/7170/threaded No Types Assigned http://www.securityfocus.com/archive/1/464814/30/7170/threaded Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securityfocus.com/bid/23281 No Types Assigned http://www.securityfocus.com/bid/23281 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id?1017848 No Types Assigned http://www.securitytracker.com/id?1017848 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.ubuntu.com/usn/usn-449-1 No Types Assigned http://www.ubuntu.com/usn/usn-449-1 Third Party Advisory
    Changed Reference Type http://www.us-cert.gov/cas/techalerts/TA07-093B.html US Government Resource http://www.us-cert.gov/cas/techalerts/TA07-093B.html Third Party Advisory, US Government Resource
    Changed Reference Type http://www.vupen.com/english/advisories/2007/1218 No Types Assigned http://www.vupen.com/english/advisories/2007/1218 Third Party Advisory
    Changed Reference Type http://www.vupen.com/english/advisories/2007/1249 No Types Assigned http://www.vupen.com/english/advisories/2007/1249 Third Party Advisory
    Changed Reference Type https://exchange.xforce.ibmcloud.com/vulnerabilities/33414 No Types Assigned https://exchange.xforce.ibmcloud.com/vulnerabilities/33414 Third Party Advisory, VDB Entry
    Changed Reference Type https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046 No Types Assigned https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046 Broken Link, Third Party Advisory
    Removed CWE NIST NVD-CWE-Other
    Added CWE NIST CWE-306
    Removed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* *cpe:2.3:o:rpath:linux:1:*:*:*:*:*:*:*
    Changed CPE Configuration OR *cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:* versions up to (including) 5-1.6 OR *cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* versions up to (excluding) 1.6.1
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 16, 2018

    Action Type Old Value New Value
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/464590/100/0/threaded [No Types Assigned]
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/464666/100/0/threaded [No Types Assigned]
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/464814/30/7170/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/464814/30/7170/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/464666/100/0/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/464590/100/0/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:10046 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 29, 2017

    Action Type Old Value New Value
    Removed Reference http://xforce.iss.net/xforce/xfdb/33414 [No Types Assigned]
    Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/33414 [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 09, 2007

    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-2007-0956 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

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

3.62 }} 0.50%

score

0.91670

percentile

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