Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
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.
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.
There is no known workaround at this time.
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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