Intrusion Prevention

Exim.Header.Buffer.BDAT.Use.After.Free

Description

This indicates an attack attempt to exploit a Remote Code Execution vulnerability in Exim.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a series of crafted SMTP packets.

Affected Products

Exim 4.89 and earlier versions

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4

CVE References

CVE-2017-16943