PT-2026-60830
Published
2026-06-09
·
Updated
2026-06-09
Description by
CVSS 4.0
6.3
MediumMetricsAV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
NIST Special Publication 800-38D specifies that the bit length of the
AAD shall not exceed
2^64 - 1 bits. The implementation of AES-GCM in
libcrux-aesgcm neither enforced this limit for encryption nor for
decryption.Impact
Use of AES-GCM with AAD of length exceeding the prescribed maximum
length degrades the authentication security of the GCM tag.
Mitigation
Starting from version
0.0.9 (published as libcrux-aes@v0.0.9),
limits on the length of the AAD input are enforced, so overlong AAD
inputs result in an error on encryption and decryption.Exploitability
Fix
Vendors
Affected products
Related identifiers
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