GLSA-200403-06 : Multiple remote buffer overflow vulnerabilities in Courier
High Nessus Plugin ID 14457
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe 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'. An attacker may supply Unicode characters that exceed BMP (Basic Multilingual Plane) range, causing an overflow.
An attacker without privileges may exploit this vulnerability remotely, allowing 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.
SolutionAll 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 '>=mail-mta/courier-0.45' # emerge '>=mail-mta/courier-0.45'