[Bug 660847] CVE-2010-4334 perl-IO-Socket-SSL: ignores user request for peer verification

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https://bugzilla.redhat.com/show_bug.cgi?id=660847

Tomas Hoger <thoger@xxxxxxxxxx> changed:

           What    |Removed                     |Added
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                 CC|                            |fedora-perl-devel-list@redh
                   |                            |at.com, jpo@xxxxxxxxxxxx,
                   |                            |paul@xxxxxxxxxxxx,
                   |                            |perl-maint-list@xxxxxxxxxx,
                   |                            |ppisar@xxxxxxxxxx,
                   |                            |psabata@xxxxxxxxxx

--- Comment #3 from Tomas Hoger <thoger@xxxxxxxxxx> 2010-12-17 11:47:05 EST ---
(In reply to comment #2)
> Another reference: http://secunia.com/advisories/42508/

Secunia advisory mentions:
  The security issue is caused due to IO::Socket::SSL silently falling back
  to the "VERIFY_NONE" verification mode if another verification mode is
  defined but no valid ca_file or ca_path is provided.

This is not entirely true, as IO::Socket::SSL carp()s in such case with error
messages as:

  No certificate verification because neither SSL_ca_file nor SSL_ca_path
  known at /usr/share/perl5/IO/Socket/SSL.pm line 301

Looking that the upstream changelog, this problem was introduced as intended
fallback behaviour in version 1.23:

  v1.23 2009.02.23
  - if neither SSL_ca_file nor SSL_ca_path are known (e.g not given and the
    default values have no existing file|path) disable checking of
    certificates, but carp about the problem

Affected versions are only in RHEL-6 and F-13/F-14.

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