CVE Vulnerability

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 ACK and the FIN ACK packets because of the bad TCP Timestamp option. Both linux and windows client are ignoring the injected packets.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/OISF/suricata/commit/9f0294fadca3dcc18c919424242a41e01f3e8318 Patch Third Party Advisory
https://github.com/OISF/suricata/commit/ea0659de7640cf6a51de5bbd1dbbb0414e4623a0 Patch Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/3395 Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/3286 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00032.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Information

Published : 2020-01-06 09:15

Updated : 2023-02-01 07:24

NVD link : CVE-2019-18625

Mitre link : CVE-2019-18625

Products Affected

Suricata

Suricata-ids

CWE
NVD-CWE-noinfo