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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

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

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

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

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:suricata-ids:suricata:5.0.0:-:*:*:*:*:*:*

OR	cpe:2.3:o:linux:linux_kernel:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

Configuration 2 (hide)

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

Information

Published : 2020-01-06 13:15

Updated : 2023-02-01 11:24

NVD link : CVE-2019-18625

Mitre link : CVE-2019-18625

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

debian

debian_linux

microsoft

windows

suricata-ids

suricata

linux

linux_kernel

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