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CVE-2017-12972

N/A
Published: August 20, 2017 at 04:00 PM UTC
Updated: June 17, 2026 at 01:04 AM UTC
1 product affected across 1 vendorNimbus JOSE+JWT

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Severity
N/A
Exploit prediction
EPSS 0.9%

Description

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.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/0d2bd649ea386539220d4facfe1f65eb1dadb86c
x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/224/byte-to-bit-overflow-in-cbc
x_refsource_CONFIRMRelease NotesThird Party Advisory
Source: [email protected]
https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E

CVSS

5MEDIUM[email protected]
Confidentiality
NONE
Integrity
PARTIAL
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345

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