Edgeless Systems Contrast from 1.21.0 before 1.25.0 contains a non-deterministic registry selection flaw in imagepuller that can prefer wildcard configuration entries over concrete domain matches. When a pull configuration lists both a concrete domain and its parent wildcard, registry credentials, CA bundles, or mirror settings intended for the wildcard may be applied to the concrete registry, leaking credentials or pull metadata.
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
edgelesssys:contrast
References 2
https://github.com/edgelesssys/contrast/security/advisories/GHSA-w4p9-c7h8-jvgr
GitHub Security Advisory (GHSA-w4p9-c7h8-jvgr)
https://www.vulncheck.com/advisories/contrast-1.21.0-before-1.25.0-credential-l…
VulnCheck Advisory: Contrast 1.21.0 before 1.25.0 Credential Leak via imagepuller Wildcard Registry Selection