DNS: TCP Message Too Long Buffer Overflow
This protocol anomaly triggers when it detects a DNS TCP-based request/reply that exceeds the maximum length specified in the message header. This can indicate a buffer overflow or an exploit attempt.
Extended Description
The presence of a DNS packet with an anomalous data length might indicate a buffer overflow attack being attempted.
Short Name
DNS:OVERFLOW:TOO-LONG-TCP-MSG
Severity
Major
Recommended
False
Recommended Action
None
Category
DNS
Keywords
CVE-2020-8620
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
3837
False Positive
Occasionally