Vulnerability in Connect2id Nimbus Jose\+jwt
CVE-2017-12972
In Nimbus JOSE+JWT before 4.39, there is no integer-overflow check when converting length values from bytes to bits, which allows attackers to conduct HMAC bypass attacks by shifting Additional Authenticated Data (AAD) and ciphertext so that different plaintext is obtained for the same HMAC.
EPSS: 0.009 (57.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Connect2id Nimbus_jose\+jwt — versions 1.0, 1.1, 1.2
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Release Notes)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2017-12972?
- CVE-2017-12972 is a high-severity vulnerability in Connect2id Nimbus Jose\+jwt, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2017-08-20.
- How severe is CVE-2017-12972?
- High severity. CVSS v3 base score is 7.5 out of 10.