CVE-2020-28009

Name of the Vulnerable Software and Affected Versions Exim versions prior to 4.94.2

Description The issue is related to an integer overflow to buffer overflow in the get stdinput() function, allowing unbounded reads accompanied by unbounded increases in a certain size variable. This could potentially allow an attacker to elevate privileges or execute arbitrary code. However, exploitation may be impractical due to the execution time needed to overflow, which could take multiple days.

Recommendations For Exim versions prior to 4.94.2, update to version 4.94.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the get stdinput() function until a patch is available.