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Vulnerability record · CVE-2009-2474 · published 21 August 2009

CVE-2009-2474: Webdav neon inadequate encryption strength vulnerability

Webdav · Neon

neon before 0.28.6, when OpenSSL or GnuTLS 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.

5.8 CVSS 2.0 Medium EPSS 1.5% · top 26.9% CWE-326 · Inadequate encryption strength
5.8CVSS 2.0 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

neon before 0.28.6, when OpenSSL or GnuTLS 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.

AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html Mailing ListThird Party Advisory
http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html Mailing ListThird Party Advisory
http://lists.manyfish.co.uk/pipermail/neon/2009-August/001046.html Mailing ListThird Party Advisory
http://secunia.com/advisories/36371 Third Party Advisory
http://secunia.com/advisories/36799 Third Party Advisory
http://support.apple.com/kb/HT4435 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2009:221 Third Party Advisory
http://www.securityfocus.com/bid/36079 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-835-1 Third Party Advisory
http://www.vupen.com/english/advisories/2009/2341 Permissions Required
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11721 Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html Mailing ListThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html Mailing ListThird Party Advisory
http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html Mailing ListThird Party Advisory
http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html Mailing ListThird Party Advisory
http://lists.manyfish.co.uk/pipermail/neon/2009-August/001046.html Mailing ListThird Party Advisory
http://secunia.com/advisories/36371 Third Party Advisory
http://secunia.com/advisories/36799 Third Party Advisory
http://support.apple.com/kb/HT4435 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2009:221 Third Party Advisory
http://www.securityfocus.com/bid/36079 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-835-1 Third Party Advisory
http://www.vupen.com/english/advisories/2009/2341 Permissions Required
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11721 Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html Mailing ListThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html Mailing ListThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-2474), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.