CVE-2021-27099

MEDIUM

SPIRE < 0.8.5, 0.9.4, 0.10.2, 0.11.3, 0.12.1 - Incorrect Authorization via AWS IID Node Attestor Path Normalization

Title source: llm
STIX 2.1

Description

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

References (1)

Core 1
Core References

Scores

CVSS v3 6.8
EPSS 0.0072
EPSS Percentile 49.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-863
Status published
Products (1)
cncf/spire < 0.8.5
Published Mar 05, 2021
Tracked Since Feb 18, 2026