Category Archives: Debian

Debian Security Advisories

DSA-3828 dovecot – security update

It was discovered that the Dovecot email server is vulnerable to a
denial of service attack. When the dict passdb and userdb are used
for user authentication, the username sent by the IMAP/POP3 client is
sent through var_expand() to perform %variable expansion. Sending
specially crafted %variable fields could result in excessive memory
usage causing the process to crash (and restart).

DSA-3825 jhead – security update

It was discovered that jhead, a tool to manipulate the non-image part of
EXIF compliant JPEG files, is prone to an out-of-bounds access
vulnerability, which may result in denial of service or, potentially,
the execution of arbitrary code if an image with specially crafted EXIF
data is processed.