CVEvulnerability

CVE-2021-27099

6.8 MEDIUM Published 2021-03-05 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-05
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV:N/AC:M/Au:S/C:P/I:P/A:N
Weaknesses
CWE-863

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

Affected configurations

• cncf spire (< 0.8.5) • cncf spire (>= 0.9.0 < 0.9.4) • cncf spire (>= 0.10.0 < 0.10.2) • cncf spire (>= 0.11.0 < 0.11.3) • cncf spire (>= 0.12.0 < 0.12.1)

Related

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References