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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200504-01] telnet-bsd: Multiple buffer overflows


Vulnerability Assessment Details

[GLSA-200504-01] telnet-bsd: Multiple buffer overflows

Vulnerability Assessment Summary
telnet-bsd: Multiple buffer overflows

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200504-01
(telnet-bsd: Multiple buffer overflows)


A buffer overflow has been identified in the env_opt_add()
function of telnet-bsd, 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 host using telnet, potentially executing
arbitrary code with the permissions of the telnet user.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0468
http://www.idefense.com/application/poi/display?id=221&type=vulnerabilities
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0469
http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities


Solution:
All telnet-bsd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/telnet-bsd-1.0-r1"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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