CVE-2009-3639
First published: Sat Oct 24 2009(Updated: )
mod_tls.c in ProFTPD 1.3.2a does not properly handle a '\0' character in a domain name in the subject's alternative name (subjectAltName) 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 <a href="https://access.redhat.com/security/cve/CVE-2009-2408">CVE-2009-2408</a>. Upstream bug report: -------------------- <a href="http://bugs.proftpd.org/show_bug.cgi?id=3275">http://bugs.proftpd.org/show_bug.cgi?id=3275</a> Upstream patch: --------------- <a href="http://bugs.proftpd.org/attachment.cgi?id=3096">http://bugs.proftpd.org/attachment.cgi?id=3096</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ProFTPD | <=1.3.2 | |
| ProFTPD | =1.3.1 | |
| ProFTPD | =1.3.2 | |
| ProFTPD | =1.3.2-rc1 | |
| ProFTPD | =1.3.2-rc2 | |
| ProFTPD | =1.3.2-rc4 | |
| ProFTPD | =1.3.3-rc1 |
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Reference Links
- http://secunia.com/advisories/37131
- http://marc.info/?l=oss-security&m=125632960508211&w=2
- http://www.securityfocus.com/bid/36804
- https://bugzilla.redhat.com/show_bug.cgi?id=530719
- http://bugs.proftpd.org/show_bug.cgi?id=3275
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:288
- http://marc.info/?l=oss-security&m=125630966510672&w=2
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html
- https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html
- http://www.debian.org/security/2009/dsa-1925
- http://secunia.com/advisories/37219
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53936
- https://access.redhat.com/security/cve/CVE-2009-2408
- http://bugs.proftpd.org/attachment.cgi?id=3096
- http://admin.fedoraproject.org/updates/proftpd-1.3.2b-1.fc11
- http://admin.fedoraproject.org/updates/proftpd-1.3.2b-1.fc10
- http://admin.fedoraproject.org/updates/proftpd-1.3.2b-1.el5
- http://admin.fedoraproject.org/updates/proftpd-1.3.2b-1.el4
Frequently Asked Questions
What is the severity of CVE-2009-3639?
The severity of CVE-2009-3639 is considered high due to potential exploitation by man-in-the-middle attackers.
How do I fix CVE-2009-3639?
To fix CVE-2009-3639, upgrade ProFTPD to version 1.3.3 or later, where the vulnerability has been addressed.
Who is affected by CVE-2009-3639?
CVE-2009-3639 affects ProFTPD versions up to and including 1.3.2 and certain release candidates.
What type of attack is possible with CVE-2009-3639?
CVE-2009-3639 allows attackers to perform man-in-the-middle attacks by spoofing arbitrary SSL servers.
What component of ProFTPD does CVE-2009-3639 impact?
CVE-2009-3639 impacts the mod_tls component in ProFTPD, specifically related to the handling of X.509 certificates.
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- alias/CVE-2009-3639
- agent/trending
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- vendor/proftpd
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- version/proftpd/1.3.2
- version/proftpd/1.3.1
- version/proftpd/1.3.2-rc1
- version/proftpd/1.3.2-rc2
- version/proftpd/1.3.2-rc4
- version/proftpd/1.3.3-rc1