epa4all-client: VAU Signature bypass
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| oviva-ag | epa4all-client | affected |
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| com.oviva.telematik | epa4all-client | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Com.oviva.telematik | Epa4all-client |
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| Oviva-ag | Epa4all-client |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-g8r3-5hwf-qp96 | epa4all-client has a VAU Signature bypass |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.121% probability within 30 days)
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Com.oviva.telematik
Com.oviva.telematik epa4all-client Oviva-ag Oviva-ag epa4all-client |
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| Vendors & Products |
Com.oviva.telematik
Com.oviva.telematik epa4all-client Oviva-ag Oviva-ag epa4all-client |
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| Description | epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.1, in SignedPublicKeysTrustValidatorImpl.isTrusted(), the ECDSA signature verification at line 45 discards the boolean return value of Signature.verify(). The method performs certificate chain validation, OCSP check, and signature algorithm setup, but never checks whether the signature actually matches. For any structurally valid signature, it returns true. This vulnerability is fixed in 1.2.1. | |
| Title | epa4all-client: VAU Signature bypass | |
| Weaknesses | CWE-295 | |
| References |
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| Metrics |
cvssV3_1
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