CVE-2015-8768 json
click/install.py in click does not require files in package filesystem tarballs to start with ./ (dot slash), which allows remote attackers…
published 2017-02-13 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-8640
- cvss
- 9.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.7%
- EPSS 2.7% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
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.
Patch / fix
- click Ubuntu 14.04 LTS 0.4.21.1ubuntu0.2
ubuntu advisories UBUNTU-CVE-2015-8768
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
2.75% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
References
-
bugs.launchpad.net
/ubuntu/+source/click/+bug/1506467
issue-tracking, patch, third-party-advisory
-
code.launchpad.net
/~cjwatson/click/audit-missing-dot-slash/+merge/274554
issue-tracking, patch, third-party-advisory
-
openwall.com
/lists/oss-security/2016/01/12/8
mailing-list, patch, third-party-advisory
-
ubuntu.com
/usn/usn-2771-1
vendor-advisory, third-party-advisory
-
securityfocus.com
/bid/96386
vdb-entry, third-party-advisory
- bazaar.launchpad.net /~click-hackers/click/devel/revision/587
- insights.ubuntu.com /2015/10/15/update-on-ubuntu-phone-security-issue/
- plus.google.com /+SzymonWaliczek/posts/3jbG2uiAniF
Sources
- CVE List CVE-2015-8768
- NVD CVE-2015-8768
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.