CVE-2020-8831
Vulnerability from cvelistv5
Published
2020-04-22 21:15
Modified
2024-09-16 19:00
Severity ?
6.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Summary
Apport creates a world writable lock file with root ownership in the world writable /var/lock/apport directory. If the apport/ directory does not exist (this is not uncommon as /var/lock is a tmpfs), it will create the directory, otherwise it will simply continue execution using the existing directory. This allows for a symlink attack if an attacker were to create a symlink at /var/lock/apport, changing apport's lock file location. This file could then be used to escalate privileges, for example. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.
References
security@ubuntu.comhttps://launchpad.net/bugs/1862348Exploit, Third Party Advisory
security@ubuntu.comhttps://usn.ubuntu.com/4315-1/Third Party Advisory
security@ubuntu.comhttps://usn.ubuntu.com/4315-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://launchpad.net/bugs/1862348Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4315-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4315-2/Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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}


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