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Debian: DSA-3167-1 Critical: sudo TZ Variable Exploit Mitigation

Jakub Wilk reported that sudo, a program designed to provide limited super user privileges to specific users, preserves the TZ variable from a user's environment without any sanitization. A user with sudo access may take advantage of this to exploit bugs in the C library functions . - ------------------------------------------------------------------------- Debian Security Advisory DSA-3167-1 This email address is being protected from spambots. You need JavaScript enabled to view it. http://www.debian.org/security/ Salvatore Bonaccorso February 22, 2015 http://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : sudo CVE ID : CVE-2014-9680 Debian Bug : 772707 Jakub Wilk reported that sudo, a program designed to provide limited super user privileges to specific users, preserves the TZ variable from a user's environment without any sanitization. A user with sudo access may take advantage of this to exploit bugs in the C library functions which parse the TZ environment variable or to open files that the user would not otherwise be able to open. The later could potentially cause changes in system behavior when reading certain device special files or cause the program run via sudo to block. For the stable distribution (wheezy), this problem has been fixed in version 1.8.5p2-1+nmu2. We recommend that you upgrade your sudo packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . The Debian Security Advisory DSA-3168-1 alerts users to a vulnerability within the bash shell related to environment variable handling.. Debian Security Advisory,Sudo Exploit,TZ Variable,Sanitization,System Behavior. . Severity: Critical. LinuxSecurity.com Team

Feb 22, 2015 •Critical Debian