CVE-2021-31920
Published May 27, 2021
Last updated 2 years ago
Overview
- Description
- Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4
- Impact score
- 2.9
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:P/I:N/A:N
Weaknesses
- nvd@nist.gov
- CWE-706
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CD72BDF7-907A-407F-94BF-ACDB1F8FFAD1",
"versionEndExcluding": "1.8.6"
},
{
"criteria": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EF73EA19-5803-4F37-A250-1C8597A17FA1",
"versionEndExcluding": "1.9.5",
"versionStartIncluding": "1.9.0"
}
],
"operator": "OR"
}
]
}
]