CVE-2021-27099 - CVE House
Back to Database
Status published Medium CVE-2021-27099

In SPIRE before versions 0.8.5, 0.9.4, 0.10.2, 0.11.3 and 0.12.1,...

Vulnerability 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

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-27099

Credits & Attribution

No credits recorded in the NVD database.

References

More from cncf

View All →
CVE-2021-27098
In SPIRE 0.8.1 through 0.8.4 and before versions 0.9.4, 0.10.2,...
High 8.1
CVE-2020-8664
CNCF Envoy through 1.13.0 has incorrect Access Control when using...
Medium 5.3
CVE-2020-8661
CNCF Envoy through 1.13.0 may consume excessive amounts of memory...
High 7.5
CVE-2020-8659
CNCF Envoy through 1.13.0 may consume excessive amounts of memory...
High 7.5
CVE-2019-9946
Cloud Native Computing Foundation (CNCF) CNI (Container Networking Interface) 0.7.4...
High 7.5

Affected Vendor

Affected Software

spire
Vulnerable Versions:
0, 0.9.0, 0.10.0, 0.11.0, 0.12.0

Timeline

Official Publish: March 5th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.