Note: This is an archival copy of Security Sun Alert 201608 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1001207.1.
Solaris 9 Operating System
Solaris 8 Operating System
Date of Resolved Release
Unprivileged local users may be able to gain unauthorized "Group ID" (gid) mail privileges due to a buffer overflow in the CDE Mailer (dtmail(1X)). This would allow users with access to a mail server the ability to read, modify, and delete the e-mail of other users in "/var/mail".
Sun acknowledges, with thanks, iDEFENSE for contacting us regarding this issue.
For additional information regarding this issue, please see: http://www.idefense.com/application/poi/display?type=vulnerabilities
This issue can occur in the following releases:
Note: Solaris 7 is not affected by this issue.
There are no symptoms that would indicate the described issue has been exploited to gain unauthorized "gid" mail access to a host.
To work around the described issue, remove the "set-group-ID" bit from dtmail(1X) by doing the following:
# chmod 0555 /usr/dt/bin/dtmail
Note: Removing the "gid" bit from dtmail(1X) may make it impossible to read NFS mounted mail boxes.
This issue is addressed in the following releases:
This solution has no attachment