CVE-2022-39957 (GCVE-0-2022-39957)
Vulnerability from cvelistv5
Published
2022-09-20 00:00
Modified
2025-11-03 19:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-693 - Protection Mechanism Failure
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| OWASP | ModSecurity Core Rule Set |
Version: 3.0.x Version: 3.1.x Version: unspecified < Version: unspecified < |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T19:27:31.661Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/"
},
{
"name": "FEDORA-2022-90708b46e3",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/"
},
{
"name": "FEDORA-2022-85a85c84b3",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/"
},
{
"name": "FEDORA-2022-1fd73a5285",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/"
},
{
"name": "[debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html"
},
{
"name": "GLSA-202305-25",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202305-25"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00004.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-39957",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-29T13:43:57.335368Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-05-29T13:44:06.356Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "ModSecurity Core Rule Set",
"vendor": "OWASP",
"versions": [
{
"status": "affected",
"version": "3.0.x"
},
{
"status": "affected",
"version": "3.1.x"
},
{
"lessThanOrEqual": "3.2.1",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "3.3.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "@Karel_Origin (Karel Knibbe)"
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-693",
"description": "CWE-693: Protection Mechanism Failure",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-05-21T00:00:00.000Z",
"orgId": "455daabc-a392-441d-aa46-37d35189897c",
"shortName": "NCSC.ch"
},
"references": [
{
"url": "https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/"
},
{
"name": "FEDORA-2022-90708b46e3",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/"
},
{
"name": "FEDORA-2022-85a85c84b3",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/"
},
{
"name": "FEDORA-2022-1fd73a5285",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/"
},
{
"name": "[debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update",
"tags": [
"mailing-list"
],
"url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html"
},
{
"name": "GLSA-202305-25",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202305-25"
}
],
"solutions": [
{
"lang": "en",
"value": "upgrade to 3.2.2 or 3.3.3"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Response body bypass in OWASP ModSecurity Core Rule Set via a specialy crafted charset in the HTTP Accept header",
"x_generator": {
"engine": "Vulnogram 0.0.9"
}
}
},
"cveMetadata": {
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"assignerShortName": "NCSC.ch",
"cveId": "CVE-2022-39957",
"datePublished": "2022-09-20T00:00:00.000Z",
"dateReserved": "2022-09-05T00:00:00.000Z",
"dateUpdated": "2025-11-03T19:27:31.661Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/\", \"name\": \"FEDORA-2022-90708b46e3\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/\", \"name\": \"FEDORA-2022-85a85c84b3\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/\", \"name\": \"FEDORA-2022-1fd73a5285\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html\", \"name\": \"[debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update\", \"tags\": [\"mailing-list\", \"x_transferred\"]}, {\"url\": \"https://security.gentoo.org/glsa/202305-25\", \"name\": \"GLSA-202305-25\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/08/msg00004.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:27:31.661Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-39957\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-05-29T13:43:57.335368Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-05-29T13:44:02.840Z\"}}], \"cna\": {\"title\": \"Response body bypass in OWASP ModSecurity Core Rule Set via a specialy crafted charset in the HTTP Accept header\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"value\": \"@Karel_Origin (Karel Knibbe)\"}], \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"OWASP\", \"product\": \"ModSecurity Core Rule Set\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0.x\"}, {\"status\": \"affected\", \"version\": \"3.1.x\"}, {\"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"3.2.1\"}, {\"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"3.3.2\"}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"upgrade to 3.2.2 or 3.3.3\"}], \"references\": [{\"url\": \"https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/\", \"name\": \"FEDORA-2022-90708b46e3\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/\", \"name\": \"FEDORA-2022-85a85c84b3\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/\", \"name\": \"FEDORA-2022-1fd73a5285\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html\", \"name\": \"[debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update\", \"tags\": [\"mailing-list\"]}, {\"url\": \"https://security.gentoo.org/glsa/202305-25\", \"name\": \"GLSA-202305-25\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.0.9\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-693\", \"description\": \"CWE-693: Protection Mechanism Failure\"}]}], \"providerMetadata\": {\"orgId\": \"455daabc-a392-441d-aa46-37d35189897c\", \"shortName\": \"NCSC.ch\", \"dateUpdated\": \"2023-05-21T00:00:00.000Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-39957\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T19:27:31.661Z\", \"dateReserved\": \"2022-09-05T00:00:00.000Z\", \"assignerOrgId\": \"455daabc-a392-441d-aa46-37d35189897c\", \"datePublished\": \"2022-09-20T00:00:00.000Z\", \"assignerShortName\": \"NCSC.ch\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…