CVE-2022-39955
CVSS V2 None
CVSS V3 Critical 9.8
Description
The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass by submitting a specially crafted HTTP Content-Type header field that indicates multiple character encoding schemes. A vulnerable back-end can potentially be exploited by declaring multiple Content-Type "charset" names and therefore bypassing the configurable CRS Content-Type header "charset" allow list. An encoded payload can bypass CRS detection this way and may then be decoded by the backend. 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.
Overview
- CVE ID
- CVE-2022-39955
- Assigner
- vulnerability@ncsc.ch
- Vulnerability Status
- Analyzed
- Published Version
- 2022-09-20T07:15:12
- Last Modified Date
- 2023-02-16T19:20:36
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:* | 1 | OR | 3.0.0 | 3.2.2 |
| cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:* | 1 | OR | 3.3.0 | 3.3.3 |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/ | Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/ | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2022-39955 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-39955 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-09-20 08:00:46 | Added to TrackCVE | |||
| 2023-01-20 14:12:52 | 2023-01-20T13:26:35 | CVE Modified Date | updated | |
| 2023-01-20 14:12:52 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |
| 2023-01-20 14:12:52 | Weakness Enumeration | update | ||
| 2023-01-30 22:14:27 | 2023-01-30T21:15:09 | CVE Modified Date | updated | |
| 2023-01-30 22:14:27 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-01-30 22:14:28 | References | updated | ||
| 2023-02-02 13:13:36 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-02-16 21:13:41 | 2023-02-16T19:20:36 | CVE Modified Date | updated | |
| 2023-02-16 21:13:41 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |