OWASP ModSecurity Core Rule Set up to 3.3.2 Response Body Accept protection mechanism

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in OWASP ModSecurity Core Rule Set up to 3.3.2. This affects an unknown part of the component Response Body Handler. Executing a manipulation of the argument Accept can lead to protection mechanism. The identification of this vulnerability is CVE-2022-39957. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in OWASP ModSecurity Core Rule Set up to 3.3.2. This vulnerability affects some unknown functionality of the component Response Body Handler. The manipulation of the argument Accept with an unknown input leads to a protection mechanism vulnerability. The CWE definition for the vulnerability is CWE-693. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass. A client can issue an HTTP Accept header field containing an optional "charset" parameter in order to receive the response in an encoded form. Depending on the "charset", this response can not be decoded by the web application firewall. A restricted resource, access to which would ordinarily be detected, may therefore bypass detection. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively.

The weakness was shared 09/20/2022. The advisory is available at coreruleset.org. This vulnerability was named CVE-2022-39957 since 09/05/2022. Technical details are known, but there is no available exploit.

Upgrading to version 3.2.2 or 3.3.3 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Protection mechanism
CWE: CWE-693
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ModSecurity Core Rule Set 3.2.2/3.3.3

Timelineinfo

09/05/2022 🔍
09/20/2022 +15 days 🔍
09/20/2022 +0 days 🔍
11/05/2025 +1142 days 🔍

Sourcesinfo

Advisory: FEDORA-2022-85a85c84b3
Status: Confirmed

CVE: CVE-2022-39957 (🔍)
GCVE (CVE): GCVE-0-2022-39957
GCVE (VulDB): GCVE-100-209134
scip Labs: https://www.scip.ch/en/?labs.20130913

Entryinfo

Created: 09/20/2022 12:24
Updated: 11/05/2025 09:40
Changes: 09/20/2022 12:24 (41), 10/21/2022 09:39 (1), 10/21/2022 09:44 (20), 11/05/2025 09:40 (15)
Complete: 🔍
Cache ID: 216::103

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