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Buffer overflow in the spa_base64_to_bits function in Exim before 4.43, as originally obtained from Samba code, and as called by the auth_spa_client function, may allow attackers to execute arbitrary code during SPA authentication.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade exim4 | Jul 30, 2024 | May 2, 2005 |
| Freebsd | — | Upgrade exim-mysqlUpgrade exim-ldap2Upgrade exim-postgresqlUpgrade exim-sa-eximUpgrade eximUpgrade exim-ldap | Dec 10, 2025 | Jan 5, 2005 |
| Gentoo Linux | — | Upgrade mail-mta/exim. | Oct 30, 2017 | May 2, 2005 |
| Ubuntu | — | Upgrade exim4-daemon-heavy | Nov 8, 2024 | May 2, 2005 |
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