CVE-2021-27098 Information

Description

In SPIRE 0.8.1 through 0.8.4 and before versions 0.9.4 0.10.2 0.11.3 and 0.12.1 specially crafted requests to the FetchX509SVID RPC of SPIRE Server’s Legacy Node API can result in the possible issuance of an X.509 certificate with a URI SAN for a SPIFFE ID that the agent is not authorized to distribute. Proper controls are in place to require that the caller presents a valid agent certificate that is already authorized to issue at least one SPIFFE ID and the requested SPIFFE ID belongs to the same trust domain prior to being able to trigger this vulnerability. This issue has been fixed in SPIRE versions 0.8.5 0.9.4 0.10.2 0.11.3 and 0.12.1.

CVSS Vector

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

Reference

https://github.com/spiffe/spire/security/advisories/GHSA-h746-rm5q-8mgq

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.1