CVE-2017-7822

MEDIUM

Firefox < 56 - AES-GCM Authentication Key Exposure via 0-Length IV

Title source: llm

Description

The AES-GCM implementation in WebCrypto API accepts 0-length IV when it should require a length of 1 according to the NIST Special Publication 800-38D specification. This might allow for the authentication key to be determined in some instances. This vulnerability affects Firefox < 56.

References (4)

Core 4

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1039465

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2017-21/

Issue Tracking x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=1368859

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/101057

Scores

CVSS v3 5.3

EPSS 0.0045

EPSS Percentile 63.9%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Details

Status published

Products (1)

mozilla/firefox < 55.0.3

Published Jun 11, 2018

Tracked Since Feb 18, 2026