Bug 2295819 (CVE-2024-39929) - CVE-2024-39929 exim: exim: Incorrect parsing of multiline rfc2231 header filename
Summary: CVE-2024-39929 exim: exim: Incorrect parsing of multiline rfc2231 header file...
Keywords:
Status: NEW
Alias: CVE-2024-39929
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2295880 2295881
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-07-04 15:40 UTC by OSIDB Bzimport
Modified: 2026-05-15 11:30 UTC (History)
1 user (show)

Fixed In Version:
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Description OSIDB Bzimport 2024-07-04 15:40:39 UTC 
Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.
Comment 1 Tim Jackson 2026-05-15 11:30:50 UTC 
This was fixed in Exim 4.98 per changelog https://code.exim.org/exim/exim/src/branch/master/doc/doc-txt/ChangeLog (reference 3099) and as such should be fixed in all current Fedora versions.
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