PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
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| OpenSSL | OpenSSL | unaffected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions | ||||||||||||||||||||
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| Openssl | Openssl |
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| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-6335-1 | openssl security update |
Ubuntu USN |
USN-8414-1 | OpenSSL vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.376% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* cpe:2.3:a:openssl:openssl:4.0.0:-:*:*:*:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-347 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
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| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
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| First Time appeared |
Openssl
Openssl openssl |
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| Vendors & Products |
Openssl
Openssl openssl |
| Type | Values Removed | Values Added |
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| Description | Issue Summary: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery. Impact Summary: An attacker impersonating a user can cause a service reading PKCS#12 files to accept forged certificates and private keys with a 1 in 256 probability. If a service accepting PKCS#12 files is using passwords for authenticating the received files, the attacker can create unencrypted PKCS#12 files that use PBMAC1 authentication that specifies an HMAC key of only one byte, allowing them to craft a file that will be accepted with a 1 in 256 probability. That would then cause the service to accept a certificate and private key controlled by the attacker. The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary. | |
| Title | PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys | |
| Weaknesses | CWE-354 | |
| References |
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