CVE-2019-18625

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Summary

CVECVE-2019-18625
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-01-06 21:15:00 UTC
Updated2023-02-01 19:24:00 UTC
DescriptionAn issue was discovered in Suricata 5.0.0. It was possible to bypass/evade any tcp based signature by faking a closed TCP session using an evil server. After the TCP SYN packet, it is possible to inject a RST ACK and a FIN ACK packet with a bad TCP Timestamp option. The client will ignore the RST ACK and the FIN ACK packets because of the bad TCP Timestamp option. Both linux and windows client are ignoring the injected packets.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 8.0 All All All
Operating System Linux Linux Kernel - All All All
Operating System Linux Linux Kernel - All All All
Operating System Microsoft Windows - All All All
Operating System Microsoft Windows - All All All
Application Suricata-ids Suricata 5.0.0 - All All
Application Suricata-ids Suricata 5.0.0 - All All

References

ReferenceSourceLinkTags
Bug #3286: TCP evasion technique by faking a closed TCP session - Suricata - Open Information Security Foundation MISC redmine.openinfosecfoundation.org Third Party Advisory
stream: fix SYN_SENT RST/FIN injection · OISF/suricata@9f0294f · GitHub CONFIRM github.com Patch, Third Party Advisory
[SECURITY] [DLA 2087-1] suricata security update MLIST lists.debian.org
Bug #3395: TCP evasion technique by faking a closed TCP session (4.1.x) - Suricata - Open Information Security Foundation MISC redmine.openinfosecfoundation.org Third Party Advisory
stream: fix SYN_SENT RST/FIN injection · OISF/suricata@ea0659d · GitHub CONFIRM github.com Patch, Third Party Advisory
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