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Vulnerability Details : CVE-2007-0956

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.
Publish Date : 2007-04-06 Last Update Date : 2021-02-02
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 306

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical 2007-02-21 2007-04-03
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2007-0956 unix
DSA-1276-1 krb5 - several vulnerabilities oval:org.mitre.oval:def:18864 unix
ELSA-2007:0095: krb5 security update (Critical) oval:org.mitre.oval:def:22677 unix
RHSA-2007:0095: krb5 security update (Critical) oval:com.redhat.rhsa:def:20070095 unix
The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system ac... oval:org.mitre.oval:def:10046 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2007-0956

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 5.10 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 6.06 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 6.10 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 3.1 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 4.0 * * * Version Details Vulnerabilities
6 Application MIT Kerberos 5 * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 2
MIT Kerberos 5 1

- References For CVE-2007-0956
CERT TA07-093B
CERT-VN VU#220816
GENTOO GLSA-200704-02
SGI 20070401-01-P
SUSE SUSE-SA:2007:025
BID 23281 MIT Kerberos 5 Telnet Daemon Authentication Bypass Vulnerability Release Date:2007-05-17
SECTRACK 1017848
REDHAT RHSA-2007:0095
VUPEN ADV-2007-1218
VUPEN ADV-2007-1249
XF kerberos-telnet-security-bypass(33414)
OVAL oval:org.mitre.oval:def:10046
BUGTRAQ 20070405 FLEA-2007-0008-1: krb5
BUGTRAQ 20070404 rPSA-2007-0063-1 krb5 krb5-server krb5-services krb5-test krb5-workstation
BUGTRAQ 20070403 MITKRB5-SA-2007-001: telnetd allows login as arbitrary user [CVE-2007-0956]

- Metasploit Modules Related To CVE-2007-0956

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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