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PostSRSd before 1.11 allows a denial of service (subprocess hang) if Postfix sends certain long data fields such as multiple concatenated email addresses. NOTE: the PostSRSd maintainer acknowledges "theoretically, this error should never occur ... I'm not sure if there's a reliable way to trigger this condition by an external attacker, but it is a security bug in PostSRSd nevertheless."
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade postsrsd | Jul 30, 2024 | Jun 28, 2021 |
| Gentoo Linux | — | Upgrade mail-filter/postsrsd. | Jul 8, 2021 | Jun 28, 2021 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Jun 28, 2021 |
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