SMTP: Reply Line
This protocol anomaly triggers when it detects a server reply line in an SMTP connection that is too long. This can indicate a buffer overflow attempt by a compromised or malicious SMTP server.
Extended Description
An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.
Affected Products
Exim exim
Short Name
SMTP:OVERFLOW:REPLY-LINE
Severity
Major
Recommended
False
Recommended Action
None
Category
SMTP
Keywords
CVE-2018-6789
Release Date
04/22/2003
Supported Platforms
mx-19.3
vmx-19.3
vsrx-19.2
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vmx-19.4
mx-19.4
srxevo-25.4
vsrx-26.2
srx-26.2
srx-branch-26.2
vsrx3bsd-26.2
mx-12.3
srx-12.3
srx-branch-12.3
vsrx-12.3
Sigpack Version
3339
False Positive
Unknown
Vendors
Exim