CVE-2018-6794
Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 24.3%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 24.29% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-693
- Affected
- suricata-ids/suricata · debian/debian linux
- Source
- cve@mitre.org
References
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.htmlMailing List, Third Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2427Third Party Advisory
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/Vendor Advisory
- https://www.exploit-db.com/exploits/44247/Exploit, Third Party Advisory, VDB Entry
- https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00000.htmlMailing List, Third Party Advisory
- https://redmine.openinfosecfoundation.org/issues/2427Third Party Advisory
- https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/Vendor Advisory
- https://www.exploit-db.com/exploits/44247/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.