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Debian Security Advisory 5728-1
Debian Linux Security Advisory 5728-1 - Phillip Szelat discovered that Exim, a mail transport agent, does not properly parse a multiline RFC 2231 header filename, allowing a remote attacker to bypass a $mime_filename based extension-blocking protection mechanism.
-----BEGIN PGP SIGNED MESSAGE-----Hash: SHA512- -------------------------------------------------------------------------Debian Security Advisory DSA-5728-1 [email protected]://www.debian.org/security/ Salvatore BonaccorsoJuly 10, 2024 https://www.debian.org/security/faq- -------------------------------------------------------------------------Package : exim4CVE ID : CVE-2024-39929Debian Bug : 1075785Phillip Szelat discovered that Exim, a mail transport agent, does notproperly parse a multiline RFC 2231 header filename, allowing a remoteattacker to bypass a $mime_filename based extension-blocking protectionmechanism.For the oldstable distribution (bullseye), this problem has been fixedin version 4.94.2-7+deb11u3.For the stable distribution (bookworm), this problem has been fixed inversion 4.96-15+deb12u5.We recommend that you upgrade your exim4 packages.For the detailed security status of exim4 please refer to its securitytracker page at:https://security-tracker.debian.org/tracker/exim4Further information about Debian Security Advisories, how to applythese updates to your system and frequently asked questions can befound at: https://www.debian.org/security/Mailing list: [email protected] PGP SIGNATURE-----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gyDE-----END PGP SIGNATURE-----Related news
Critical Exim Mail Server Vulnerability Exposes Millions to Malicious Attachments
A critical security issue has been disclosed in the Exim mail transfer agent that could enable threat actors to deliver malicious attachments to target users' inboxes. The vulnerability, tracked as CVE-2024-39929, has a CVSS score of 9.1 out of 10.0. It has been addressed in version 4.98. "Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass