CVE-2009-3765: Medium severity mutt vulnerability

Published Oct 23, 2009
·
Updated

muttssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Affected Software

3 affected components
Mutt Mutt=1.5.19
Mutt Mutt=1.5.20
OpenSSL OpenSSL

Event History

Oct 23, 2009
CVE Published
via MITRE·07:00 PM
Data Sourced
via MITRE·07:00 PM
Description
Data Sourced
07:30 PM
DescriptionWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2009-3765?

CVE-2009-3765 has a medium severity rating due to its potential to allow man-in-the-middle attacks.

2

How do I fix CVE-2009-3765?

To fix CVE-2009-3765, you should upgrade to Mutt version 1.5.21 or later, which addresses the vulnerability.

3

Which versions of Mutt are affected by CVE-2009-3765?

Mutt versions 1.5.19 and 1.5.20 are affected by CVE-2009-3765.

4

How does CVE-2009-3765 enable man-in-the-middle attacks?

CVE-2009-3765 allows attackers to spoof arbitrary SSL servers by exploiting the improper handling of a '\0' character in the Common Name field of an X.509 certificate.

5

Is OpenSSL affected by CVE-2009-3765?

No, OpenSSL itself is not directly affected by CVE-2009-3765; the vulnerability specifically impacts Mutt when it uses OpenSSL.

Contact

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