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
Published Feb 13, 2017
9.8
CRITICALCVSS 3.0
EPSS 2.75%
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.
Affected products
No data.
Configuration 1
- n/a
Configuration 2
- 14.04
- 15.04
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.75% (0.02746) | 85.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.75% (0.02746) | 84.21th | v5 (v2026.06.15) |
| Jul 9, 2025 | 1.59% (0.01590) | 80.83th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.75% (0.02749) | 84.71th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.82% (0.04820) | 82.12th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.75% (0.02749) | 85.02th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.97% (0.00968) | 84.00th | v3 (v2023.03.01) |
| Mar 30, 2024 | 0.97% (0.00968) | 83.00th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.97% (0.00968) | 80.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
References (8)
- http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587 x_refsource_CONFIRM
- http://ubuntu.com/usn/usn-2771-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/12/8 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/96386 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/ x_refsource_CONFIRM
- https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587 | x_refsource_CONFIRM | |
| http://ubuntu.com/usn/usn-2771-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2016/01/12/8 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/96386 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/ | x_refsource_CONFIRM | |
| https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF | x_refsource_MISC |
Change history (0)
No recorded changes yet.