Vulnerability Details CVE-2018-6794
Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c. If a malicious server breaks a normal TCP flow and sends data before the 3-way handshake is complete, then the data sent by the malicious server will be accepted by web clients such as a web browser or Linux CLI utilities, but ignored by Suricata IDS signatures. This mostly affects IDS signatures for the HTTP protocol and TCP stream content; signatures for TCP packets will inspect such network traffic as usual.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.394
EPSS Ranking 97.2%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
References
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html
- https://redmine.openinfosecfoundation.org/issues/2427
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/
- https://www.exploit-db.com/exploits/44247/
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html
- https://redmine.openinfosecfoundation.org/issues/2427
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/
- https://www.exploit-db.com/exploits/44247/
Products affected by CVE-2018-6794
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cpe:2.3:a:suricata-ids:suricata:0.8.2
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cpe:2.3:a:suricata-ids:suricata:1.0.0
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cpe:2.3:a:suricata-ids:suricata:1.0.1
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cpe:2.3:a:suricata-ids:suricata:1.0.2
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cpe:2.3:a:suricata-ids:suricata:1.0.3
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cpe:2.3:a:suricata-ids:suricata:1.0.4
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cpe:2.3:a:suricata-ids:suricata:1.0.5
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cpe:2.3:a:suricata-ids:suricata:1.1
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cpe:2.3:a:suricata-ids:suricata:1.1.1
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cpe:2.3:a:suricata-ids:suricata:1.2
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cpe:2.3:a:suricata-ids:suricata:1.2.1
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cpe:2.3:a:suricata-ids:suricata:1.3
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cpe:2.3:a:suricata-ids:suricata:1.3.1
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cpe:2.3:a:suricata-ids:suricata:1.3.2
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cpe:2.3:a:suricata-ids:suricata:1.3.3
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cpe:2.3:a:suricata-ids:suricata:1.3.4
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cpe:2.3:a:suricata-ids:suricata:1.3.5
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cpe:2.3:a:suricata-ids:suricata:1.3.6
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cpe:2.3:a:suricata-ids:suricata:1.4
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cpe:2.3:a:suricata-ids:suricata:1.4.1
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cpe:2.3:a:suricata-ids:suricata:1.4.2
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cpe:2.3:a:suricata-ids:suricata:1.4.3
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cpe:2.3:a:suricata-ids:suricata:1.4.4
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cpe:2.3:a:suricata-ids:suricata:1.4.5
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cpe:2.3:a:suricata-ids:suricata:1.4.6
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cpe:2.3:a:suricata-ids:suricata:1.4.7
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cpe:2.3:a:suricata-ids:suricata:2.0
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cpe:2.3:a:suricata-ids:suricata:2.0.1
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cpe:2.3:a:suricata-ids:suricata:2.0.10
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cpe:2.3:a:suricata-ids:suricata:2.0.11
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cpe:2.3:a:suricata-ids:suricata:2.0.2
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cpe:2.3:a:suricata-ids:suricata:2.0.3
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cpe:2.3:a:suricata-ids:suricata:2.0.4
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cpe:2.3:a:suricata-ids:suricata:2.0.5
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cpe:2.3:a:suricata-ids:suricata:2.0.6
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cpe:2.3:a:suricata-ids:suricata:2.0.7
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cpe:2.3:a:suricata-ids:suricata:2.0.8
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cpe:2.3:a:suricata-ids:suricata:2.0.9
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cpe:2.3:a:suricata-ids:suricata:2.1
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cpe:2.3:a:suricata-ids:suricata:3.0
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cpe:2.3:a:suricata-ids:suricata:3.0.1
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cpe:2.3:a:suricata-ids:suricata:3.0.2
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cpe:2.3:a:suricata-ids:suricata:3.1
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cpe:2.3:a:suricata-ids:suricata:3.1.1
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cpe:2.3:a:suricata-ids:suricata:3.1.2
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cpe:2.3:a:suricata-ids:suricata:3.1.3
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cpe:2.3:a:suricata-ids:suricata:3.1.4
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cpe:2.3:a:suricata-ids:suricata:3.2
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cpe:2.3:a:suricata-ids:suricata:3.2.1
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cpe:2.3:a:suricata-ids:suricata:3.2.2
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cpe:2.3:a:suricata-ids:suricata:3.2.3
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cpe:2.3:a:suricata-ids:suricata:3.2.4
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cpe:2.3:a:suricata-ids:suricata:3.2.5
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cpe:2.3:a:suricata-ids:suricata:4.0.0
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cpe:2.3:a:suricata-ids:suricata:4.0.1
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cpe:2.3:a:suricata-ids:suricata:4.0.2
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cpe:2.3:a:suricata-ids:suricata:4.0.3
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cpe:2.3:o:debian:debian_linux:8.0