CVE-2023-27493
Published Apr 4, 2023
Last updated 2 years ago
Overview
- Description
- Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy does not sanitize or escape request properties when generating request headers. This can lead to characters that are illegal in header values to be sent to the upstream service. In the worst case, it can cause upstream service to interpret the original request as two pipelined requests, possibly bypassing the intent of Envoy’s security policy. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. As a workaround, disable adding request headers based on the downstream request properties, such as downstream certificate properties.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 9.1
- Impact score
- 5.2
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Severity
- CRITICAL
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DAD93214-C958-4A69-9291-15D1C22CFD3F",
"versionEndExcluding": "1.22.9"
},
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17BFB303-DA5A-4E83-93F7-3C1EA340E434",
"versionEndExcluding": "1.23.6",
"versionStartIncluding": "1.23.0"
},
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "92B633B8-FA4A-4630-9302-96F2C8336E36",
"versionEndExcluding": "1.24.4",
"versionStartIncluding": "1.24.0"
},
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8AFC6741-6FDF-47F6-A4AF-B5F5233ABB71",
"versionEndExcluding": "1.25.3",
"versionStartIncluding": "1.25.0"
}
],
"operator": "OR"
}
]
}
]