Note: This is an archival copy of Security Sun Alert 200084 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1000068.1.
Solaris 9 Operating System
Date of Resolved Release
Local unprivileged users may be able to panic Solaris systems which have Solaris Auditing (BSM) enabled. Being able to panic a Solaris Auditing enabled system is a type of Denial of Service (DoS).
This issue can occur in the following releases:
Note 1: This issue does not affect Solaris 8 or Solaris 10.
Note 2: This issue only affects systems which have Solaris Auditing (see bsmconv(1M)) enabled.
To determine if a system has Solaris Auditing enabled the grep(1) command can be used to search the "/etc/system" file for a reference to the c2audit kernel module as in the following example:
$ grep c2audit /etc/system set c2audit:audit_load = 1
Note 3: This issue only occurs on systems where Solaris Auditing has been configured to audit one of the following audit classes (see audit_class(4)):
0x00000001:fr:file read 0x00000002:fw:file write 0x00000008:fm:file attribute modify 0x00000010:fc:file create 0x00000020:fd:file delete
To determine which audit classes have been configured on the system consult the audit_control(4) and audit_user(4) files.
Should the described issue occur, the system panics with a stack backtrace which ends with the following function calls:
bcopy+0x170(300016c86c8, 0, ffffffc7, 38, 0, 300016c86c8) audit_savepath+0x10c(30000c29048, 0, 0, 30000225b68, 0, 300008c5d40) lookuppnvp+0x80c(30000225b68, 0, 1, 0, 0, 1494400) [...]
Until patches can be applied Solaris Auditing can be configured to not audit the audit classes mentioned in Section 2 above. This can be done by modifying the audit_control(4) and audit_user(4) files and then either rebooting the system or modifying the audit preselection mask of running processes on the system using auditconfig(1M).
This issue is addressed in the following releases:
This solution has no attachment