What’s Vulnerable › Vulnerabilities

CVE-2017-8900

• Severity: medium (CVSS 4.6 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-12 · updated 2026-06-17

Description

LightDM through 1.22.0, when systemd is used in Ubuntu 16.10 and 17.x, allows physically proximate attackers to bypass intended AppArmor restrictions and visit the home directories of arbitrary users by establishing a guest session.

Affected products

• lightdm: through 1.22.0

References

• http://www.securityfocus.com/bid/98554
• https://launchpad.net/bugs/1663157
• https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html
• https://www.ubuntu.com/usn/usn-3285-1/
• http://www.securityfocus.com/bid/98554
• https://launchpad.net/bugs/1663157
• https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html
• https://www.ubuntu.com/usn/usn-3285-1/

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