CVE-2021-45098

CVE-2021-45098 affects Suricata (pre-6.0.4). Core issue: an attacker can bypass HTTP-based signature checks by spoofing an RST TCP packet with random md5header options, injecting an RST ACK after the 3‑way handshake, leading the server to deliver HTTP responses for forbidden URLs without triggeri...

CVE-2021-45098

An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it's possible to inject an RST ACK with a random TCP md5header option...

PT-2021-7952

Name of the Vulnerable Software and Affected Versions Suricata versions prior to 6.0.4 Description An issue in Suricata allows bypassing or evading any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it...

CVE-2019-18625

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...

CVE-2019-18625: Undefined Security Weakness

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...

Обход блокировок на CISCO раутере при сканировании сети

Проблема жила достаточно долго, но только сейчас удалось найти причину, по которой пакеты от запрещенных нами адресов проникали в локальную сеть. Итак, есть раутер фирмы CISCO с "биосом" IOS tm 2500 Software C2500-F2IN-L, Version 11.211, RELEASE SOFTWARE fc1. Есть правила на раутере, которые...