Bug 2452179 (CVE-2026-27857)
| Summary: | CVE-2026-27857 dovecot: denial of service via specially crafted NOOP command | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in dovecot. An unauthenticated and remote attacker can send a specially crafted "NOOP" command containing numerous open and close parentheses without a command-ending line feed, causing the server to allocate an excessive amount of memory, resulting in a denial of service.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2452244, 2452246, 2452245 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-03-27 09:02:22 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:13498 https://access.redhat.com/errata/RHSA-2026:13498 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:13830 https://access.redhat.com/errata/RHSA-2026:13830 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:13857 https://access.redhat.com/errata/RHSA-2026:13857 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:17602 https://access.redhat.com/errata/RHSA-2026:17602 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2026:17630 https://access.redhat.com/errata/RHSA-2026:17630 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2026:17625 https://access.redhat.com/errata/RHSA-2026:17625 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:17628 https://access.redhat.com/errata/RHSA-2026:17628 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:17626 https://access.redhat.com/errata/RHSA-2026:17626 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:18053 https://access.redhat.com/errata/RHSA-2026:18053 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:19149 https://access.redhat.com/errata/RHSA-2026:19149 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:19364 https://access.redhat.com/errata/RHSA-2026:19364 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2026:19453 https://access.redhat.com/errata/RHSA-2026:19453 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2026:19455 https://access.redhat.com/errata/RHSA-2026:19455 |