Description (CNA)
WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext passwords. An attacker can exploit timing differences to extract the server-computed hash character by character, then authenticate using the correct hash without knowing the password. Version 4.9.1 fixes the issue.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| weechat / weechat | affected >= 0.3.4, < 4.9.1 |
CWE
CWE-208
References
ADP enrichment
No English description supplied.