What’s Vulnerable › Vulnerabilities

CVE-2017-12973

• Severity: low (CVSS 3.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-08-20 · updated 2026-06-17
• Weakness: CWE-354

Description

Nimbus JOSE+JWT before 4.39 proceeds improperly after detection of an invalid HMAC in authenticated AES-CBC decryption, which allows attackers to conduct a padding oracle attack.

Affected products

• Connect2id Nimbus JOSE+JWT: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 (+121)

References

• https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/6a29f10f723f406eb25555f55842c59a43a38912
• https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/223/aescbc-return-immediately-on-invalid-hmac
• https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt
• https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/6a29f10f723f406eb25555f55842c59a43a38912
• https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/223/aescbc-return-immediately-on-invalid-hmac
• https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt

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