HTTP: PNG-Chunk Overflow
This anomaly triggers if it detects PNG IHDR-chunk length value exceeding the length of all the PNG data. Triggering this incident can indicate malicious behavior aimed at your system.
References
BugTraq: 10857
CVE: CVE-2018-4934
URL: http://www.libpng.org/pub/png/spec/iso/index-object.html
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