CVE-2024-49393: Mutt: neomutt: to and cc email header fields are not protected by cryptographic signing
First published: Mon Nov 11 2024(Updated: )
In neomutt and mutt, the To and Cc email headers are not validated by cryptographic signing which allows an attacker that intercepts a message to change their value and include himself as a one of the recipients to compromise message confidentiality.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mutt | ||
| Mutt | ||
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 | |
| debian/mutt | <=2.0.5-4.1+deb11u3<=2.2.12-0.1~deb12u1<=2.2.9-1+deb12u1<=2.2.13-1 | |
| debian/neomutt | <=20201127+dfsg.1-1.2<=20220429+dfsg1-4.1 | 20250404+dfsg-2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2325317
- https://access.redhat.com/security/cve/CVE-2024-49393
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49393
- https://nvd.nist.gov/vuln/detail/CVE-2024-49393
- https://launchpad.net/bugs/cve/CVE-2024-49393
- https://security-tracker.debian.org/tracker/CVE-2024-49393
- https://ubuntu.com/security/CVE-2024-49393
- https://gitlab.com/muttmua/mutt/-/issues/490
- https://gitlab.com/muttmua/mutt/-/issues/490#note_2209448655
- http://mutt.org/doc/manual/#crypt-protected-headers-read
- https://github.com/neomutt/neomutt/issues/4223
- https://github.com/neomutt/neomutt/commit/913a991a5a8a000c0acc761dd8c9b76eefabfbea
- https://github.com/neomutt/neomutt/commit/06f8ff5a97ecc4763d52f75b9aedf80578fe1404
Frequently Asked Questions
What is the severity of CVE-2024-49393?
CVE-2024-49393 is rated as a medium severity vulnerability affecting neomutt and mutt.
How do I fix CVE-2024-49393?
To mitigate CVE-2024-49393, update neomutt to version 20250113+dfsg-1 or later version, and for mutt, ensure you're using a patched release.
What does CVE-2024-49393 affect?
CVE-2024-49393 affects neomutt and mutt email clients where the To and Cc email headers are not cryptographically validated.
What type of attack does CVE-2024-49393 enable?
CVE-2024-49393 enables an attacker to intercept and modify email headers, potentially compromising message confidentiality.
Can CVE-2024-49393 affect my email security?
Yes, if exploited, CVE-2024-49393 could allow unauthorized recipients to be added to emails, weakening overall email security.
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