UBUNTU-CVE-2021-45098

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Source
https://ubuntu.com/security/CVE-2021-45098
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-45098.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-45098
Related
Published
2021-12-16T05:15:00Z
Modified
2025-01-13T10:22:38Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata@3.0-1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.8-1build1
2.0.9-1
2.0.10-1
2.0.10-2
2.0.11-1

3.*

3.0-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata@3.2-2ubuntu3?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.2-2ubuntu3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata@1:6.0.4-3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:6.0.4-3

Affected versions

1:6.*

1:6.0.4-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1:6.0.4-3",
            "binary_name": "suricata"
        },
        {
            "binary_version": "1:6.0.4-3",
            "binary_name": "suricata-dbgsym"
        }
    ]
}