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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
Multiple remote buffer overflow vulnerabilities in Courier
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200403-06
(Multiple remote buffer overflow vulnerabilities in Courier)
The vulnerabilities have been found in the 'SHIFT_JIS' converter in
'shiftjis.c' and 'ISO2022JP' converter in 'so2022jp.c'. A possible hacker may
supply Unicode characters that exceed BMP (Basic Multilingual Plane) range,
causing an overflow.
A possible hacker without rights may exploit this vulnerability remotely, permiting arbitrary code to be executed in order to gain unauthorized access.
While a workaround is not currently known for this issue, all users are
advised to upgrade to the latest version of the affected packages.
All users should upgrade to current versions of the affected packages:
# emerge sync
# emerge -pv ">=net-mail/courier-imap-3.0.0"
# emerge ">=net-mail/courier-imap-3.0.0"
# ** Or
depending on your installation... **
# emerge -pv ">=net-mail/courier-0.45"
# emerge ">=net-mail/courier-0.45"
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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