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Vulnerability Details : CVE-2007-3149

sudo, when linked with MIT Kerberos 5 (krb5), does not properly check whether a user can currently authenticate to Kerberos, which allows local users to gain privileges, in a manner unintended by the sudo security model, via certain KRB5_ environment variable settings. NOTE: another researcher disputes this vulnerability, stating that the attacker must be "a user, who can already log into your system, and can already use sudo."
Publish Date : 2007-06-11 Last Update Date : 2008-09-05
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
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 Admin
Vulnerability Type(s) Gain privileges
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

Not vulnerable. Versions of sudo package shipped with Red Hat Enterprise Linux versions 2.1, 3, 4 and 5 are linked with PAM support and never use libkrb5 authentication.
Source: Redhat

- Products Affected By CVE-2007-3149

# Product Type Vendor Product Version Update Edition Language
1 Application MIT Kerberos 5 Version Details Vulnerabilities
2 Application Todd Miller Sudo 1.6.8 P12 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
MIT Kerberos 1
Todd Miller Sudo 1

- References For CVE-2007-3149

http://www.securityfocus.com/archive/1/archive/1/470739/100/0/threaded
BUGTRAQ 20070607 Sudo: local root compromise with krb5 enabled
http://www.securityfocus.com/archive/1/archive/1/470752/100/0/threaded
BUGTRAQ 20070607 MIT krb5: makes sudo authentication issue MUCH worse.
http://www.securityfocus.com/archive/1/archive/1/470774/100/0/threaded
BUGTRAQ 20070607 Re: Sudo: local root compromise with krb5 enabled
http://www.securityfocus.com/bid/24368
BID 24368 Todd Miller Sudo Kerberos Authentication Local Authentication Bypass Weakness Release Date:2007-06-13
http://www.sudo.ws/cgi-bin/cvsweb/sudo/auth/kerb5.c CONFIRM
http://secunia.com/advisories/26540
SECUNIA 26540

- Metasploit Modules Related To CVE-2007-3149

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