CVE-2018-6794 Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current 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.
Source:
MITRE
Description Last Modified:
06/13/2018
View Analysis Description
Analysis Description
Suricata before 4.1 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.
Source:
MITRE
Description Last Modified:
02/07/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
5.3 MEDIUM
Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
(V3 legend)
Impact Score:
1.4
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
Low
Availability (A):
None
CVSS v2.0 Severity and Metrics:
Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
Access Vector (AV):
Network
Access Complexity (AC):
Insufficient_Info
Authentication (AU):
None
Confidentiality (C):
None
Integrity (I):
Partial
Availability (A):
None
Additional Information:
Allows unauthorized modification
References to Advisories, Solutions, and Tools
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Technical Details
Vulnerability Type
(View All)
- Protection Mechanism Failure (CWE-693)
Change History
4 change records found
- show changes
CVE Modified by MITRE -
6/13/2018 9:29:34 PM
| Action |
Type |
Old Value |
New Value |
| Changed |
Description |
Record truncated, showing 500 of 515 characters.
View Entire Change Record
Suricata before 4.1 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 tr |
Record truncated, showing 500 of 517 characters.
View Entire Change Record
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 |
| Added |
Reference |
|
https://suricata-ids.org/2018/02/14/suricata-4-0-4-available/ [No Types Assigned] |
Reanalysis -
6/7/2018 9:21:10 AM
| Action |
Type |
Old Value |
New Value |
| Changed |
CPE Configuration |
OR
*cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions up to (excluding) 4.1 |
OR
*cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions up to (excluding) 4.0.4 |
Initial Analysis -
3/13/2018 12:35:04 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:suricata-ids:suricata:*:*:*:*:*:*:*:* versions up to (excluding) 4.1 |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:N/I:P/A:N) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Added |
CWE |
|
CWE-693 |
| Changed |
Reference Type |
https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 No Types Assigned |
https://github.com/OISF/suricata/pull/3202/commits/e1ef57c848bbe4e567d5d4b66d346a742e3f77a1 Patch, Third Party Advisory |
| Changed |
Reference Type |
https://redmine.openinfosecfoundation.org/issues/2427 No Types Assigned |
https://redmine.openinfosecfoundation.org/issues/2427 Third Party Advisory |
| Changed |
Reference Type |
https://www.exploit-db.com/exploits/44247/ No Types Assigned |
https://www.exploit-db.com/exploits/44247/ Exploit, Third Party Advisory, VDB Entry |
CVE Modified by MITRE -
3/7/2018 9:29:03 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://www.exploit-db.com/exploits/44247/ [No Types Assigned] |
Quick Info
CVE Dictionary Entry:
CVE-2018-6794
NVD Published Date:
02/07/2018
NVD Last Modified:
06/13/2018
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