Bug 580438
| Summary: | Regression: sudoers parsing fails with Defaults_Type target including "!user" | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Pierre Carrier <prc> |
| Component: | sudo | Assignee: | Daniel Kopeček <dkopecek> |
| Status: | CLOSED ERRATA | QA Contact: | BaseOS QE Security Team <qe-baseos-security> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 5.5 | CC: | asersen, dkopecek, prc, sgrubb |
| Target Milestone: | rc | Keywords: | Regression |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | sudo-1.7.2p1-10.el5 | Doc Type: | Bug Fix |
| Doc Text: |
Due to an incorrect definition of a lexical analyzer rule, using a negated user-specific "Defaults" directive failed with a parse error. With this update, such directives are now parsed as expected.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-13 23:07:54 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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New Contents:
Due to an incorrect definition of a lexical analyzer rule, using a negated user-specific "Defaults" directive failed with a parse error. With this update, such directives are now parsed as expected.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0079.html |
Description of problem: When using a "!user" in User_List in a Default_Type, sudo and visudo fail parsing sudoers. Version-Release number of selected component (if applicable): Bug does appear in sudo-1.7.2p1-5.el5 (as in RHEL5.5), does not appear in sudo-1.6.9p17-5.el5 (as in RHEL5.4). How reproducible: Anywhere anytime. Steps to Reproduce: 1. Add in sudoers: Defaults: requiretty Defaults:user !requiretty 2. Execute as any user: $ sudo ls 3. Replace lines from step 1 in sudoers by: Defaults:!user requiretty 4. Repeat step 2. Actual results: First alternative is accepted, second fails with the following error: >>> /etc/sudoers: syntax error near line 62 <<< sudo: parse error in /etc/sudoers near line 64 sudo: no valid sudoers sources found, quitting Expected results: Both alternatives should be accepted. Additional info: This situation is compatible with the sudoers grammar, as defined in the manpage. Extract: Default_Type ::= 'Defaults' | 'Defaults' '@' Host_List | 'Defaults' ':' User_List | 'Defaults' '!' Cmnd_List | 'Defaults' '>' Runas_List User_List ::= User | User ',' User_List User ::= '!'* username | '!'* '#'uid | '!'* '%'group | '!'* '+'netgroup | '!'* '%:'nonunix_group | '!'* User_Alias