求助！升级OpenSSL后，yum报错

最近用户用漏扫软件扫出OpenSSH漏洞，可是升级完OpenSSL和OpenSSH后，yum却报错。OpenSSL装回原来的版本，yum报错就没了。
求大神指点迷津！

操作系统：
rhel-server-5.8-s390x

OpenSSH升级前版本：
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

升级后版本：
OpenSSH_6.7p1, OpenSSL 1.0.1i 6 Aug 2014

运行yum报错：
[root@rdlnx020 ~]# yum
Traceback (most recent call last):
  File "/usr/bin/yum", line 4, in ?
    import yum
  File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 51, in ?
    import config
  File "/usr/lib/python2.4/site-packages/yum/config.py", line 27, in ?
    from parser import ConfigPreProcessor
  File "/usr/lib/python2.4/site-packages/yum/parser.py", line 3, in ?
    import urlgrabber
  File "/usr/lib/python2.4/site-packages/urlgrabber/__init__.py", line 53, in ?
    from grabber import urlgrab, urlopen, urlread
  File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 412, in ?
    import keepalive
  File "/usr/lib/python2.4/site-packages/urlgrabber/keepalive.py", line 339, in ?
    class HTTPSHandler(KeepAliveHandler, urllib2.HTTPSHandler):
AttributeError: 'module' object has no attribute 'HTTPSHandler'