CVE-2015-8768

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.75% Top 15%
Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2015-8768?
CVE-2015-8768 has been scored as a critical severity vulnerability.
How to fix CVE-2015-8768?
To fix CVE-2015-8768, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-8768 being actively exploited in the wild?
It is possible that CVE-2015-8768 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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