CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
56.1%
An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it’s possible to inject an RST ACK with a random TCP md5header option. Then, the client can send an HTTP GET request with a forbidden URL. The server will ignore the RST ACK and send the response HTTP packet for the client’s request. These packets will not trigger a Suricata reject action.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
Alpine | 3.15-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
Alpine | 3.16-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
Alpine | 3.17-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
Alpine | 3.18-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
Alpine | 3.19-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
Alpine | 3.20-community | noarch | suricata | < 6.0.4-r0 | UNKNOWN |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
56.1%