CVE-2010-4344

Name of the Vulnerable Software and Affected Versions Exim versions prior to 4.70

Description The issue is related to a heap-based buffer overflow in the string vformat function, allowing remote attackers to execute arbitrary code via an SMTP session. This can be achieved by including two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging. The estimated number of potentially affected devices worldwide is not specified.

Recommendations For Exim versions prior to 4.70, update to version 4.70 or later to resolve the issue. As a temporary workaround, consider restricting access to the string vformat function in the string.c file until a patch is available. Avoid using crafted headers in large messages via SMTP sessions to minimize the risk of exploitation.