CVE-2015-1795
First published: Wed Mar 11 2015(Updated: )
It was discovered that the glusterfs.spec file writes a shell script under a predictable temporary name. A local attacker could potentially use this flaw to escalate their privileges to root by modifying the shell script during the installation of the glusterfs packages. The vulnerable code is: -- rpm in RHEL5 does not have os.tmpname() -- io.tmpfile() can not be resolved to a filename to pass to bash :-/ tmpname = "/tmp/glusterfs_pretrans_" .. os.date("%s") tmpfile = io.open(tmpname, "w") tmpfile:write(script) tmpfile:close() ok, how, val = os.execute("/bin/bash " .. tmpname)
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GlusterFS | =3.2 | |
| Red Hat Enterprise Linux | =6.0 | |
| Red Hat Enterprise Linux | =7.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1200927#c3
- https://rhn.redhat.com/errata/RHSA-2017-0484.html
- https://rhn.redhat.com/errata/RHSA-2017-0486.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1200927
- http://rhn.redhat.com/errata/RHSA-2017-0484.html
- http://rhn.redhat.com/errata/RHSA-2017-0486.html
- http://www.securityfocus.com/bid/99311
- http://www.securitytracker.com/id/1038128
Frequently Asked Questions
What is the severity of CVE-2015-1795?
CVE-2015-1795 is classified as a privilege escalation vulnerability.
How do I fix CVE-2015-1795?
To remediate CVE-2015-1795, ensure that you upgrade to the patched version of GlusterFS as provided by your distribution.
Which versions are affected by CVE-2015-1795?
CVE-2015-1795 affects Red Hat Gluster Storage version 3.2.
Can CVE-2015-1795 be exploited remotely?
CVE-2015-1795 requires local access to the system to exploit the vulnerability.
What is the potential impact of CVE-2015-1795?
If exploited, CVE-2015-1795 could allow a local attacker to gain root privileges.
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