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defrag: mishandling of overlaps leading to policy bypass

Moderate
victorjulien published GHSA-xvrx-88mv-xcq5 May 7, 2024

Package

suricata

Affected versions

>=6.0.0,>=6.0.18
>=7.0.0,<=7.0.4

Patched versions

6.0.19
7.0.5

Description

Impact

Fragmentation anomalies may be reassembled incorrectly leading to mis-detection of rules.

Patches

Upgrade to 7.0.5 or 6.0.19.

References

https://redmine.openinfosecfoundation.org/issues/6672 (7.0.x)
https://redmine.openinfosecfoundation.org/issues/6673 (7.0.x)
https://redmine.openinfosecfoundation.org/issues/6677 (7.0.x)

Credits

PhD thesis work from Lucas Aubard supervised by Johan Mazel, Gilles Guette and Pierre Chifflier

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVE ID

CVE-2024-32867

Weaknesses

No CWEs