Executive Summary

Summary
Title New openldap2.3/openldap packages fix SSL certificate verification weakness
Informations
Name DSA-1943 First vendor Publication 2009-12-02
Vendor Debian Last vendor Modification 2009-12-02
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

It was discovered that OpenLDAP, a free implementation of the Lightweight Directory Access Protocol, 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.

For the oldstable distribution (etch), this problem has been fixed in version 2.3.30-5+etch3 for openldap2.3.

For the stable distribution (lenny), this problem has been fixed in version 2.4.11-1+lenny1 for openldap.

For the testing distribution (squeeze), and the unstable distribution (sid), this problem has been fixed in version 2.4.17-2.1 for openldap.

We recommend that you upgrade your openldap2.3/openldap packages.

Original Source

Url : http://www.debian.org/security/2009/dsa-1943

Alert History

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0
1
2
Date Informations
2016-04-26 21:41:17
  • Multiple Updates
2014-02-17 11:29:02
  • Multiple Updates
2013-05-11 00:43:37
  • Multiple Updates