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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200504-04] mit-krb5: Multiple buffer overflows in telnet client

Vulnerability Assessment Details

[GLSA-200504-04] mit-krb5: Multiple buffer overflows in telnet client

Vulnerability Assessment Summary
mit-krb5: Multiple buffer overflows in telnet client

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200504-04
(mit-krb5: Multiple buffer overflows in telnet client)

A buffer overflow has been identified in the env_opt_add()
function, where a response requiring excessive escaping can cause a
heap-based buffer overflow. Another issue has been identified in the
slc_add_reply() function, where a large number of SLC commands can
overflow a fixed size buffer.

Impact

Successful exploitation would require a vulnerable user to connect
to a possible hacker-controlled telnet host, potentially executing arbitrary
code with the permissions of the telnet user on the client.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0468
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0469
http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2005-001-telnet.txt

Solution:
All mit-krb5 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.3.6-r2"

Network Security Threat Level: Medium

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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