Vulnerability Monitor

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CVE-2021-31920

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.

Published

2021-05-27T05:15:06.880

Last Modified

2024-11-21T06:06:30.790

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

8.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-706
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application istio istio < 1.8.6 Yes
Application istio istio < 1.9.5 Yes
References