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    CVE-2015-8768

    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
    Last Modified:Apr 20, 2025
    EPS:Feb 13, 2017
    EPSS Score:0.0159
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Click Project
    Product
    Click

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
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    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High