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WS-2019-0299
Good to know:
Date: October 23, 2019
chacha20' before v0.2.3 allow generation of keystreams that are larger than ChaCha20's max blocks (~256GB of blocks ). This duplicates the keystream with failure modes similar to nonce reuse.
Language: C++
Severity Score
Severity Score
Weakness Type (CWE)
Generation of Weak Initialization Vector (IV)
CWE-1204Top Fix
CVSS v3.1
Base Score: |
|
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Attack Vector (AV): | LOCAL |
Attack Complexity (AC): | LOW |
Privileges Required (PR): | NONE |
User Interaction (UI): | REQUIRED |
Scope (S): | UNCHANGED |
Confidentiality (C): | NONE |
Integrity (I): | NONE |
Availability (A): | HIGH |