Auth bypass in Xscreensaver
CVE-2011-2187
xscreensaver before 5.14 crashes during activation and leaves the screen unlocked when in Blank Only Mode and when DPMS is disabled, which allows local attackers to access resources without authentication.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Xscreensaver — versions before 5.14
- Xscreensaver Project
- Debian Linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
References
- security-tracker.debian.org/tracker/CVE-2011-2187 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/cve-2011-2187 (Third Party Advisory)
- bugs.debian.org/cgi-bin/bugreport.cgi (Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2011/06/06/17 (mailing-list, Mailing List, Third Party Advisory)
- www.jwz.org/xscreensaver/changelog.html (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2011-2187?
- CVE-2011-2187 is a high-severity vulnerability in Xscreensaver, classified under Missing Authentication for Critical Function. CVSS score: 7.8/10. Published 2019-11-27.
- How severe is CVE-2011-2187?
- High severity. CVSS v3 base score is 7.8 out of 10.