Vulnerability Monitor

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CVE-2021-27099

In SPIRE before versions 0.8.5, 0.9.4, 0.10.2, 0.11.3 and 0.12.1, the "aws_iid" Node Attestor improperly normalizes the path provided through the agent ID templating feature, which may allow the issuance of an arbitrary SPIFFE ID within the same trust domain, if the attacker controls the value of an EC2 tag prior to attestation, and the attestor is configured for agent ID templating where the tag value is the last element in the path. This issue has been fixed in SPIRE versions 0.11.3 and 0.12.1

Published

2021-03-05T18:15:13.067

Last Modified

2024-11-21T05:57:20.980

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.8 (MEDIUM)

CVSSv2 Vector

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

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

6.8

Impact Score

4.9

Weaknesses
  • Type: Primary
    CWE-863
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cncf spire < 0.8.5 Yes
Application cncf spire < 0.9.4 Yes
Application cncf spire < 0.10.2 Yes
Application cncf spire < 0.11.3 Yes
Application cncf spire < 0.12.1 Yes
References