CVE-2019-18792
Vulnerability from cvelistv5
Published
2020-01-06 17:52
Modified
2024-08-05 02:02
Severity ?
Summary
An issue was discovered in Suricata 5.0.0. It is possible to bypass/evade any tcp based signature by overlapping a TCP segment with a fake FIN packet. The fake FIN packet is injected just before the PUSH ACK packet we want to bypass. The PUSH ACK packet (containing the data) will be ignored by Suricata because it overlaps the FIN packet (the sequence and ack number are identical in the two packets). The client will ignore the fake FIN packet because the ACK flag is not set. Both linux and windows clients are ignoring the injected packet.
References
cve@mitre.orghttps://github.com/OISF/suricata/commit/1c63d3905852f746ccde7e2585600b2199cefb4bPatch, Third Party Advisory
cve@mitre.orghttps://github.com/OISF/suricata/commit/fa692df37a796c3330c81988d15ef1a219afc006Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/01/msg00032.htmlThird Party Advisory
cve@mitre.orghttps://redmine.openinfosecfoundation.org/issues/3324Exploit, Third Party Advisory
cve@mitre.orghttps://redmine.openinfosecfoundation.org/issues/3394Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/OISF/suricata/commit/1c63d3905852f746ccde7e2585600b2199cefb4bPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/OISF/suricata/commit/fa692df37a796c3330c81988d15ef1a219afc006Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/01/msg00032.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://redmine.openinfosecfoundation.org/issues/3324Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://redmine.openinfosecfoundation.org/issues/3394Exploit, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

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