Vulnerability CVE-2015-8768
Published: 2017-02-13

Description:
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.

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Click project -> Click 
Canonical -> Ubuntu linux 

 References:
http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587
http://ubuntu.com/usn/usn-2771-1
http://www.openwall.com/lists/oss-security/2016/01/12/8
http://www.securityfocus.com/bid/96386
https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467
https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554
https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/
https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF
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