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CVE-2018-6794

N/A
Published: February 7, 2018 at 05:00 AM UTC
Updated: June 17, 2026 at 02:02 AM UTC
2 products affected across 2 vendorsDebian LinuxSuricata

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Severity
N/A
Exploit prediction
EPSS 24%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
8.0
Suricata· Suricata Ids
95%
v < 4.0.4
Affected range stops below 4.0.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://redmine.openinfosecfoundation.org/issues/2427
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/
Exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
Source: [email protected]
https://www.exploit-db.com/exploits/44247/

CVSS

5MEDIUM[email protected]
Confidentiality
NONE
Integrity
PARTIAL
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-693

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