Vulnerabilidades

An issue was discovered in the POP3 component of Courier Mail Server before 1.1.5. Meddler-in-the-middle attackers can pipeline commands after the POP3 STLS command, injecting plaintext commands into an encrypted user session.

SQL injection vulnerability in authpgsqllib.c in Courier-Authlib before 0.62.0, when a non-Latin locale Postgres database is used, allows remote attackers to execute arbitrary SQL commands via query parameters containing apostrophes.

SQL injection vulnerability in the Courier Authentication Library (aka courier-authlib) before 0.60.6 on SUSE openSUSE 10.3 and 11.0, and other platforms, when MySQL and a non-Latin character set are used, allows remote attackers to execute arbitrary SQL commands via the username and unspecified other vectors.

libs/comverp.c in Courier MTA before 0.53.2 allows attackers to cause a denial of service (CPU consumption) via unknown vectors involving usernames that contain the "=" (equals) character, which is not properly handled during encoding.

Multiple buffer overflows in (1) iso2022jp.c or (2) shiftjis.c for Courier-IMAP before 3.0.0, Courier before 0.45, and SqWebMail before 4.0.0 may allow remote attackers to execute arbitrary code "when Unicode character is out of BMP range."

SQL injection vulnerability in the PostgreSQL auth module for courier 0.40 and earlier allows remote attackers to execute SQL code via the user name.

Courier sqwebmail before 0.40.0 does not quickly drop privileges after startup in certain cases, which could allow local users to read arbitrary files.

Double Precision Courier e-mail MTA allows remote attackers to cause a denial of service (CPU consumption) via a message with an extremely large or negative value for the year, which causes a tight loop.