Why does perl fail with Permission denied on /usr/local/lib64/perl5?

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 8
    • Qualys

Issue

  • Perl application fails with error:

    Can't locate SSH.pm:   /usr/local/lib64/perl5/SSH.pm: Permission denied

  • Some content in /usr/local/{lib64,share}/perl5 was deleted

Resolution

Contact Qualys Technical Support Team for further troubleshooting and remediation.

Root Cause

Review incident article from Qualys Article Link.

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Diagnostic Steps

  • Verify that Qualys agent is installed

    # rpm -qa | grep qualys
qualys-cloud-agent-7.0.2-6.x86_64

  • Verify if the directories listed below have permissions that differ from the Qualys recommendations

    # [ -d /usr/local/lib64/perl5 ] && ls -ld /usr/local/lib64/perl5
# [ -d /usr/local/share/perl5 ] && ls -ld /usr/local/share/perl5

# stat -c "%a %n" /usr/local/lib64/perl5 /usr/local/share/perl5

  • Remediation can be achieved by ensuring all directories and files under the pair of perl directories are world-readable.

   find /usr/local/lib64/perl5 /usr/local/share/perl5 -type d -print0 | xargs -0 chmod 755
   find /usr/local/lib64/perl5 /usr/local/share/perl5 -type f -print0 | xargs -0 chmod 644

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