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An issue was discovered in Prosody before 0.11.9. It does not use a constant-time algorithm for comparing certain secret strings when running under Lua 5.2 or later. This can potentially be used in a timing attack to reveal the contents of secret strings to an attacker.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade prosody | Aug 22, 2024 | May 13, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | May 13, 2021 |
| Debian | — | Upgrade prosody | May 19, 2021 | May 13, 2021 |
| Freebsd | — | Upgrade prosody | Nov 4, 2022 | May 13, 2021 |
| Gentoo Linux | — | Upgrade net-im/prosody. | May 28, 2021 | May 13, 2021 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | May 13, 2021 |
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