Note: This is an archival copy of Security Sun Alert 238250 as previously published on http://sunsolve.sun.com.|
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1019294.1.
Solaris 10 Operating System
Date of Resolved Release
Denial of Service (DoS) Vulnerability in the Solaris e1000g(7D) Gigabit Ethernet Driver
A security vulnerability in the Solaris e1000g(7D) Gigabit Ethernet driver on systems with Intel 82571/82572 network interface controllers may allow a remote unprivileged user to block all inbound network packets. This constitutes a Denial of Service (DoS).
2. Contributing Factors
This issue can occur in the following releases:
1. Solaris 8 and Solaris 9 are not impacted by this issue.
2. Only OpenSolaris installations including the file /kernel/drv/e1000g.conf file are impacted by this issue.
3. This issue only impacts systems that are using the e1000g Gigabit Ethernet driver for the Intel 82571 or 82572 chipset based NICs. To determine if a system is equipped with one of these chipsets, the following command can be run:
$ prtconf -pv | egrep "8086,(10a4|10a5|10bc|10d5|105e|107d|107e|107f|10b9)"
To determine if a system is equipped with e1000g plumbed interfaces, the following command can be run (as 'root' user):
# dladm show-link|grep e1000g
4. OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. The base build can be derived as follows:-
$ uname -a
There are no predictable symptoms that would indicate the described vulnerability has been exploited. Should the described issue occur, the system may not receive any network packets on the vulnerable interface. While the system can still send the packets, it may not respond to network connections, causing the system to be unresponsive.
Should the described issue occur, the network interface can be restored by doing the following (as 'root' user):
# dladm show-link|grep e1000g
This issue is addressed in the following releases:
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