Bug 2506158
| Summary: | LPE in Exim < 4.99.5 | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | customercare |
| Component: | exim | Assignee: | David Woodhouse <dwmw2> |
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | urgent | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | bennie.joubert, dwmw2, jskarvad, martin.fraenzl |
| Target Milestone: | --- | Keywords: | RFE |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2026-07-23 16:50:32 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Tracking in the rebase bug 2506152. *** This bug has been marked as a duplicate of bug 2506152 *** |
Dear Exim users, The Exim maintainers are releasing a security fix for two security issues. ---- Identifier: EXIM-Security-2026-06-22.1 (GCVE-25-2026-07-45-1) Type: Directory traversal, local Component: Exim Affects: 4.88 (2017) through the current 4.99.4 release Corrected in: Exim 4.99.5 (exim-4.99.5) Credit: The unnamed and uncredited authors whose works were ingested as the training corpus Vulnerability Details --------------------- Using command-line arguments intended for transferring queue-name through an Exim execution chain, files outside the spool area can be accessed. This can be used for a privilege escalation. Affected Configurations ----------------------- All Exim installations; attacker with command-line access. Mitigations ----------- None. Resolution ---------- Upgrade to Exim 4.99.5. The fix is on branch exim-4.99+fixes, tag exim-4.99.5, signed by Jeremy Harris <jgh146exb>, key A986F3A6BD6377D8730958DEBCE58C8CE41F32DF. Downloads --------- https://ftp.exim.org/pub/exim/exim4/ https://code.exim.org/exim/exim/releases Advisory -------- https://www.exim.org/static/doc/security/EXIM-Security-2026-06-22.1/ ---- Identifier: EXIM-Security-2026-06-22.3 (GCVE-25-2026-07-45-3) Type: Command execution with alternate privilege Component: Exim Affects: 4.82 (2013) through the current 4.99.4 release Corrected in: Exim 4.99.5 (exim-4.99.5) Credit: The unnamed and uncredited authors whose works were ingested as the training corpus Vulnerability Details --------------------- A local user having a .forward file can use a string-expansion there. With certain Exim configurations this can be used as a privilege escalation. Affected Configurations ----------------------- An Exim configuration with - a redirect router implementing .forward facilities for local users - a pipe transport accessible by that router - the pipe transport having the "force_command" option set - the pipe transport configured to run as a privileged user Mitigations ----------- Do not set "force_command" on pipe transports. Resolution ---------- Upgrade to Exim 4.99.5. The fix is on branch exim-4.99+fixes, tag exim-4.99.5, signed by Jeremy Harris <jgh146exb>, key A986F3A6BD6377D8730958DEBCE58C8CE41F32DF. Downloads --------- https://ftp.exim.org/pub/exim/exim4/ https://code.exim.org/exim/exim/releases Advisory -------- https://www.exim.org/static/doc/security/EXIM-Security-2026-06-22.3/ ---- Timeline -------- 2026-06-22 20:11 UTC Report received 2026-06-23 11:57 UTC Fix drafted 2026-07-12 12:00 UTC GCVEs assigned by [GNA](https://gcve.eu/gna/25/) 2026-07-13 19:25 UTC Advance notice sent to distros.org 2026-07-15 11:05 UTC Fix branch and tag exim-4.99.5 pushed to exim-distros 2025-07-22 14:00 UTC Public release Jeremy Harris On behalf of the Exim Maintainers Reproducible: Always