Re: [PATCH] rpc: fix handling of SSH auth failure code

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, 2018-08-31 at 11:15 +0100, Daniel P. Berrangé wrote:
> The result of libssh2_userauth_password is being assigned to 'ret' in
> one branch and 'rc' in the other branch. Checks are all done against the
> 'ret' variable, so one branch never does the correct check.
> 
> Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
> ---
>  src/rpc/virnetsshsession.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)

The fix itself is correct, so:

  Reviewed-by: Andrea Bolognani <abologna@xxxxxxxxxx>

However, see below.

>      /* determine exist status */
> -    if (ret == LIBSSH2_ERROR_AUTHENTICATION_FAILED)
> +    if (rc == LIBSSH2_ERROR_AUTHENTICATION_FAILED)
>          return 1;
>      else
>          return -1;

Since we have a cleanup label right after this, it would make
sense to change both 'return' to 'ret = ': that would ensure
the function has a single return and also prevent 'password'
from leaking when an error which is not AUTHENTICATION_FAILED
is returned by libssh2_userauth_password().

-- 
Andrea Bolognani / Red Hat / Virtualization

--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list




[Index of Archives]     [Virt Tools]     [Libvirt Users]     [Lib OS Info]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [KDE Users]     [Fedora Tools]

  Powered by Linux