Improper Certificate Validation in hMailServer
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Progressive Robot Ltd | hMailServer | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Progressive Robot | Hmailserver |
|
Vendor Solution
Upgrade to hMailServer 6.3.6, whose webmail keeps a signer's certificate only when its chain is trusted, only under the From address the signature was verified for, and a different certificate for an address that has one only when the reader chooses to. After upgrading, review the correspondents' certificates on the webmail's Security page and remove any that should not be there. Until then: check the certificates listed for an address before sending it encrypted mail from the webmail, or encrypt in a mail program.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.169% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Progressive Robot
Progressive Robot hmailserver |
|
| Vendors & Products |
Progressive Robot
Progressive Robot hmailserver |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Improper certificate validation in the webmail of Progressive Robot hMailServer 6.3.2 through 6.3.5 allows a remote unauthenticated attacker to have S/MIME-encrypted mail that the account later sends to another correspondent also encrypted to the attacker's key. When its recipient opened a signed message, the webmail kept the signer's certificate for encrypting replies whether or not the server found its chain trusted, under the first e-mail address the certificate listed rather than the message's From address, and beside any certificate already held for that address. Encrypted mail later sent from the webmail to that address was encrypted to every certificate held for it, so a holder of the kept certificate's key who obtains a copy of such a message can read it. | |
| Title | Improper Certificate Validation in hMailServer | |
| Weaknesses | CWE-295 | |
| References |
| |
| Metrics |
cvssV3_1
|