CVE-2004-2429

Vulnerability

Multiple stack and heap buffer overflows exist in spamGuard versions before 1.7-BETA. Vulnerable functions include qmail_parseline and sendmail_parseline in parser.c, loadconfig and removespaces in loadconfig.c, and unspecified functions in functions.c [1]. The exact versions affected are all prior to 1.7-BETA.

Exploitation

An attacker can exploit these vulnerabilities remotely by sending specially crafted input that triggers buffer overflows when processed by the vulnerable functions. No authentication is required, as spamGuard typically processes incoming emails. The attacker must be able to deliver data to the spam filtering service.

Impact

Successful exploitation allows remote attackers to execute arbitrary code on the system running spamGuard, potentially leading to full compromise of the mail server. The CIA impact is high: confidentiality, integrity, and availability could be affected.

Mitigation

The vulnerability is fixed in spamGuard version 1.7-BETA and later. Users should upgrade to at least 1.7-BETA [1]. No other workarounds are documented in the available reference.