CVE-2015-8768
CRITICAL severity · CVSS 9.8 · CWE-264
9.8CVSS CRITICAL
Summary
click/install.py in click does not require files in package filesystem tarballs to start with ./ (dot slash), which allows remote attackers to install an alternate security policy and gain privileges via a crafted package, as demonstrated by the test.mmrow app for Ubuntu phone.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.openwall.com/lists/oss-security/2016/01/12/8 ↗
Additional information
- NVD record
- http://www.openwall.com/lists/oss-security/2016/01/12/8Patch
- https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467Patch
- https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554Patch
- http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587
- http://ubuntu.com/usn/usn-2771-1Advisory
- http://www.securityfocus.com/bid/96386Advisory
- https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/
- https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF