Link following in Puppet Agent - CVE-2011-3870
Published: October 27, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44557
CSH Severity: High
CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-3870
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.
Puppet 2.7.x before 2.7.5, 2.6.x before 2.6.11, and 0.25.x allows local users to modify the permissions of arbitrary files via a symlink attack on the SSH authorized_keys file.
Affected software
Puppet Agent
Amazon Linux AMI
Fedora
puppet
Amazon Linux AMI
Fedora
puppet
How to mitigate CVE-2011-3870
Install update from vendor's website.
puppet - addressed in versions 2.6.6-3.el5, 2.6.6-3.el6
External References
- http://groups.google.com/group/puppet-announce/browse_thread/thread/91e3b46d2328a1cb
- http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068053.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068061.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-October/068093.html
- http://secunia.com/advisories/46458
- http://www.debian.org/security/2011/dsa-2314
- http://www.ubuntu.com/usn/USN-1223-1
- http://www.ubuntu.com/usn/USN-1223-2
- https://puppet.com/security/cve/cve-2011-3870