Streaming AEAD overflow
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- Affected Versions
- Tink version 1.0 - 1.3.x on Java
- Tink version 1.0 - 1.3.x on Android
- Tink version 1.0 - 1.3.x on Golang
- Affected Key Types
- AES-GCM-HKDF
Description
Streaming AEAD implementations encrypt the plaintext in
segments. Tink uses a 4-byte segment counter. When encrypting a stream
consisting of more than 232 segments, the segment counter might
overflow and lead to leakage of key material or plaintext.
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Last updated 2024-11-14 UTC.
[null,null,["Last updated 2024-11-14 UTC."],[],["Tink versions 1.0-1.3.x on Java, Android, and Golang are affected, specifically with AES-GCM-HKDF key types. The issue arises in Streaming AEAD implementations where data is encrypted in segments. When a stream exceeds 2^32 segments, the 4-byte segment counter overflows. This overflow can potentially cause the leakage of key material or plaintext.\n"],null,[]]
