Date: Wed, 11 Feb 2015 00:59:16 -0500 (EST) From: cve-assign@...re.org To: Todd.Miller@...rtesan.com Cc: cve-assign@...re.org, oss-security@...ts.openwall.com Subject: Re: CVE request: sudo TZ issue -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > http://www.sudo.ws/alerts/tz.html We are not sure why this is being interpreted as a vulnerability in sudo that should have a CVE assignment in which sudo is the responsible product. It appears that you are adding a new security feature in which sudo chooses to help prevent exploitation of bugs in a system library such as libc. Adding security features is often not within the scope of CVE. We're not disputing that it's worthwhile for you to change the sudo code and publish an alert explaining why you did that. It's just that some types of worthwhile changes can have CVE IDs whereas others can't. For example, see: http://www.openwall.com/lists/oss-security/2014/10/16/2 Also: > As such, a program run via sudo will inherit the (possibly malicious) > value of TZ. Depending on how other code is written, a TZ value could still be malicious even if it doesn't satisfy the definition of "unsafe" that you included. Should there be other CVEs for sudo if any such code is identified? To be clear, you can have a CVE assignment if, as the "vendor" of sudo, you believe that absense of the new "unsafe" checking was an implementation mistake in sudo. However, in that case, can you clarify whether it is one mistake or multiple mistakes? For example, is there a documented or implied security policy for sudo that addresses the current situation? A policy might be something like: - for every environment variable passed through by default, there is supposed to be a proactive review of all common use cases of that environment variable, and sudo is supposed to have input validation that ensures that the environment variable's value is normal and properly handled within that use case or, for multiple policies: - sudo is supposed to prevent traversal attacks with environment variables - sudo is supposed to block syntactically invalid values of environment variables - sudo is supposed to block long values of environment variables - -- CVE assignment team, MITRE CVE Numbering Authority M/S M300 202 Burlington Road, Bedford, MA 01730 USA [ PGP key available through http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (SunOS) iQEcBAEBAgAGBQJU2u8mAAoJEKllVAevmvmswp8H/0HzL1216WeNJxPvb3E5SSOf nZv/2M5BxOdC4OTWmVPzxmUVkwKlTMlf7iKLOZqb2scsrRGHi8EshsSvLZ2iFKIy Y+axIv8YqS8IkvAC3rgDegY8DYrN4+phffHfzAa9ekrndgIjFEjk9AFo4u7p0xUs rBtohfkufg0wWpajUctfkeV8MnoA4RSpZDu1MymNdfdx4c66Wyu28LFY8/scqscO UO1/RcpwRXp1rJS5SBsa+HsW+TohROzMHMhWTphStHWb3fNMhm9+X6hYQydbeFWh EjK0TlhwXT3Vm6eoPQBaPdheKDU8F+YvhUDtxKeQzmhrjuVpy56YDV/uXQWHtBU= =I0i/ -----END PGP SIGNATURE-----
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