Suricata up to 3.2.0 IP Protocol Field defrag-hash.c Evasion privileges management

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Suricata up to 3.2.0. Affected by this issue is some unknown functionality of the file defrag-hash.c of the component IP Protocol Field Handler. The manipulation results in privileges management (Evasion). It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Suricata up to 3.2.0. Affected is an unknown function of the file defrag-hash.c of the component IP Protocol Field Handler. The manipulation with an unknown input leads to a privileges management vulnerability (Evasion). CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 02/15/2017 as Suricata IDS - IPv4 evasion as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project. It is possible to use fragmentation to enforce a policy bypass.

Upgrading to version 3.2.1 eliminates this vulnerability. The upgrade is hosted for download at suricata-ids.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. The vulnerability will be addressed with the following lines of code:

(d1)->proto == IP_GET_IPPROTO(p) &&

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Productinfo

Name

Suricata

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.3
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Name: Evasion
Class: Privileges management / Evasion
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Suricata 3.2.1
Patch: github.com

Timelineinfo

02/15/2017 🔍
02/24/2017 +9 days 🔍
08/16/2020 +1269 days 🔍

Sourcesinfo

Advisory: Suricata IDS - IPv4 evasion
Status: Not defined

GCVE (VulDB): GCVE-100-97230

Entryinfo

Created: 02/24/2017 08:20
Updated: 08/16/2020 20:19
Changes: 02/24/2017 08:20 (44), 08/16/2020 20:19 (1)
Complete: 🔍
Cache ID: 216:8CE:103