CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
AI Score
Confidence
Low
EPSS
Percentile
15.8%
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.
bugs.exim.org/show_bug.cgi?id=3099#c4
bugzilla.redhat.com/show_bug.cgi?id=2295819
git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b
git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357
github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3
nvd.nist.gov/vuln/detail/CVE-2024-39929
www.cve.org/CVERecord?id=CVE-2024-39929
www.rfc-editor.org/rfc/rfc2231.txt