GLSA 201401-23: sudo: Privilege escalation

Title:sudo: Privilege escalation
Bugs: #459722


Multiple vulnerabilities have been found in sudo which could result in privilege escalation.


sudo allows a system administrator to give users the ability to run commands as other users. Access to commands may also be granted on a range to hosts.

Affected packages

Package Vulnerable Unaffected Architecture(s)
app-admin/sudo < 1.8.6_p7 >= 1.8.6_p7 All supported architectures


Multiple vulnerabilities have been found in sudo:

  • sudo does not correctly validate the controlling terminal on a system without /proc or when the tty_tickets option is enabled.
  • sudo does not properly handle the clock when it is set to the epoch.


A local attacker with sudo privileges could connect to the stdin, stdout, and stderr of the terminal of a user who has authenticated with sudo, allowing the attacker to hijack the authorization of the other user. Additionally, a local or physically proximate attacker could set the system clock to the epoch, bypassing time restrictions on sudo authentication.


There is no known workaround at this time.


All sudo users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.6_p7"



This GLSA and any updates to it are available for viewing at the Gentoo Security Website:


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