CVE-2007-0956
First published: Fri Apr 06 2007(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Kerberos | <1.6.1 | |
| Debian Linux | =3.1 | |
| Debian Linux | =4.0 | |
| Ubuntu | =6.10 | |
| Ubuntu | =5.10 | |
| Ubuntu | =6.06 |
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Reference Links
- http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-001-telnetd.txt
- http://www.debian.org/security/2007/dsa-1276
- http://www.redhat.com/support/errata/RHSA-2007-0095.html
- http://www.ubuntu.com/usn/usn-449-1
- http://www.kb.cert.org/vuls/id/220816
- http://secunia.com/advisories/24706
- http://secunia.com/advisories/24736
- http://secunia.com/advisories/24757
- http://security.gentoo.org/glsa/glsa-200704-02.xml
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-102867-1
- http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html
- http://www.securityfocus.com/bid/23281
- http://www.securitytracker.com/id?1017848
- http://secunia.com/advisories/24740
- http://secunia.com/advisories/24750
- http://secunia.com/advisories/24755
- http://secunia.com/advisories/24785
- http://secunia.com/advisories/24786
- http://secunia.com/advisories/24817
- http://secunia.com/advisories/24735
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:077
- http://www.us-cert.gov/cas/techalerts/TA07-093B.html
- http://www.vupen.com/english/advisories/2007/1218
- http://www.vupen.com/english/advisories/2007/1249
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33414
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10046
- http://www.securityfocus.com/archive/1/464814/30/7170/threaded
- http://www.securityfocus.com/archive/1/464666/100/0/threaded
- http://www.securityfocus.com/archive/1/464590/100/0/threaded
Frequently Asked Questions
What is the severity of CVE-2007-0956?
CVE-2007-0956 is a critical vulnerability that allows remote attackers to bypass authentication in the telnet daemon.
How do I fix CVE-2007-0956?
To fix CVE-2007-0956, update to MIT Kerberos 5 version 1.6.1 or later.
What systems are affected by CVE-2007-0956?
CVE-2007-0956 affects multiple versions of MIT Kerberos 5 as well as Debian and Ubuntu Linux distributions.
Can CVE-2007-0956 be exploited remotely?
Yes, CVE-2007-0956 can be exploited remotely by attackers who send specially crafted usernames.
Is CVE-2007-0956 related to any other vulnerabilities?
Yes, CVE-2007-0956 is similar in nature to CVE-2007-0882, both involving authentication bypass issues.
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