VulnerabilityModified
CVE-2016-2568
pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.
HIGH 7.8EPSS 0.37%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.37% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-116
- Affected
- freedesktop/polkit · redhat/enterprise linux
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2016/02/26/3Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/cve-2016-2568Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746Issue Tracking, Third Party Advisory
- https://ubuntu.com/security/CVE-2016-2568Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/26/3Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/cve-2016-2568Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746Issue Tracking, Third Party Advisory
- https://ubuntu.com/security/CVE-2016-2568Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.