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OpenSSL - Correctif de sécurité pour le 09/07/15

13/07/2015, 21h20
Avec un peu de retard :
OpenSSL Security Advisory [9 Jul 2015]

Alternative chains certificate forgery (CVE-2015-1793)
================================================== ====

Severity: High

During certificate verification, OpenSSL (starting from version 1.0.1n and
1.0.2b) will attempt to find an alternative certificate chain if the first
attempt to build such a chain fails. An error in the implementation of this
logic can mean that an attacker could cause certain checks on untrusted
certificates to be bypassed, such as the CA flag, enabling them to use a valid
leaf certificate to act as a CA and "issue" an invalid certificate.

This issue will impact any application that verifies certificates including
SSL/TLS/DTLS clients and SSL/TLS/DTLS servers using client authentication.

This issue affects OpenSSL versions 1.0.2c, 1.0.2b, 1.0.1n and 1.0.1o.

OpenSSL 1.0.2b/1.0.2c users should upgrade to 1.0.2d
OpenSSL 1.0.1n/1.0.1o users should upgrade to 1.0.1p

This issue was reported to OpenSSL on 24th June 2015 by Adam Langley/David
Benjamin (Google/BoringSSL). The fix was developed by the BoringSSL project.


As per our previous announcements and our Release Strategy
(, support for OpenSSL versions
1.0.0 and 0.9.8 will cease on 31st December 2015. No security updates for these
releases will be provided after that date. Users of these releases are advised
to upgrade.


URL for this Security Advisory:

Note: the online version of the advisory may be updated with additional
details over time.

For details of OpenSSL severity classifications please see:
Source :

07/07/2015, 09h11
Bonjour à tous,

Pour ceux qui n'auraient pas encore eu l'information, tenez-vous prêts pour jeudi 09/07/15 :
[openssl-announce] Forthcoming OpenSSL releases
Mark J Cox mark at
Mon Jul 6 15:25:02 UTC 2015

Forthcoming OpenSSL releases

The OpenSSL project team would like to announce the forthcoming release
of OpenSSL versions 1.0.2d and 1.0.1p.

These releases will be made available on 9th July. They will fix a
single security defect classified as "high" severity. This defect does
not affect the 1.0.0 or 0.9.8 releases.


The OpenSSL Project Team
Source :


Et pour rappel, mettez également à jour vos HAproxy :

July, 3rd, 2015 : 1.5.14 : fixes an information leak vulnerability (CVE-2015-3281)

A vulnerability was found when HTTP pipelining is used. In some cases, a client might be able to cause a buffer alignment issue and retrieve uninitialized memory contents that exhibit data from a past request or session. I want to address sincere congratulations to Charlie Smurthwaite of aTech Media for the really detailed traces he provided which made it possible to find the cause of this bug. Every user of 1.5-dev, 1.5.x or 1.6-dev must upgrade to 1.5.14 or latest 1.6-dev snapshot to fix this issue, or use the backport of the fix provided by their operating system vendors. CVE-2015-3281 was assigned to this bug. Code and changelog are available here as usual.
Source :