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Alerts This Week
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Gentoo: 201406-27 High: Polkit Privilege Escalation Risk

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Calendar Grey June 26, 2014
Scroller Gentoo
Gentoo Linux Notice GLSA 202309-14 critical impact: polkit vulnerability leads to privilege escalation across various software packages.
A race condition in polkit could allow a local attacker to gain escalated privileges.

Summary

polkit has a race condition which potentially allows a process to change its UID/EUID via suid or pkexec before authentication is completed.

Topics%20covered

Topics Covered

security advisory high severity gentoo privilege escalation hplip polkit systemd

Resolution

All polkit users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-auth/polkit-0.112"
All HPLIP users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-print/hplip-3.14.1"
All Spice-Gtk users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/spice-gtk-0.21"
All systemd users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/systemd-204-r1"
All libvirt users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/libvirt-1.1.2-r3"

References

[ 1 ] CVE-2013-4288 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4288 [ 2 ] CVE-2013-4311 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4311 [ 3 ] CVE-2013-4324 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4324 [ 4 ] CVE-2013-4325 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4325 [ 5 ] CVE-2013-4327 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4327

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201406-27
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: polkit, Spice-Gtk, systemd, HPLIP, libvirt: Privilege
Date: June 26, 2014
Bugs: #484486, #484488, #485420, #485546, #485904
ID: 201406-27

Topics%20covered

Topics Covered

security advisory high severity gentoo privilege escalation hplip polkit systemd

Synopsis

A race condition in polkit could allow a local attacker to gain escalated privileges.

Background

polkit is a toolkit for managing policies relating to unprivileged processes communicating with privileged processes.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-print/hplip < 3.14.1 >= 3.14.1 2 net-misc/spice-gtk < 0.21 >= 0.21 3 sys-apps/systemd < 204-r1 >= 204-r1 4 app-emulation/libvirt < 1.1.2-r3 >= 1.1.2-r3 5 sys-auth/polkit < 0.112 >= 0.112 ------------------------------------------------------------------- 5 affected packages

Impact

===== A local attacker could start a suid or pkexec process through a polkit-enabled application, which could result in privilege escalation or bypass of polkit restrictions.

Workaround

There is no known workaround at this time.