HTTP: PLTE-chunk Error
This anomaly triggers if it detects that the PNG PLTE-chunk presence is not consistent with the IHDR-chunk parameter "color type". For the color types# 0, 4 the PLTE chunk should be present. Triggering this incident can indicate malicious behavior aimed at your system.
References
URL: http://www.libpng.org/pub/png/spec/iso/index-object.html
Short Name
HTTP:STC:IMG:PNG-PLTE-ERROR
Severity
Minor
Recommended
False
Recommended Action
None
Category
HTTP
Keywords
PLTE PNG chunk
Release Date
11/07/2005
Supported Platforms
srx-branch-12.3
srx-branch-19.3
vsrx3bsd-19.2
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
srx-19.4
vsrx-12.3
srx-12.3
vsrx-19.2
srx-19.3
Sigpack Version
3324
False Positive
Unknown