CVE-2019-18625 | BDVDB-2026-128639 Detail
Description#
An 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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://redmine.openinfosecfoundation.org/issues/3286
- https://github.com/OISF/suricata/commit/9f0294fadca3dcc18c919424242a41e01f3e8318
- https://redmine.openinfosecfoundation.org/issues/3395
- https://github.com/OISF/suricata/commit/ea0659de7640cf6a51de5bbd1dbbb0414e4623a0
- https://lists.debian.org/debian-lts-announce/2020/01/msg00032.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.