CVE-2013-6381: Buffer Overflow
Buffer overflow in the qethsnmpcommand function in drivers/s390/net/qethcoremain.c in the Linux kernel through 3.12.1 allows local users to cause a denial of service or possibly have unspecified other impact via an SNMP ioctl call with a length value that is incompatible with the command-buffer size.
Other sources
Linux kernel built with a Gigabit Ethernet device support(CONFIGQETH) is vulnerable to a buffer overflow flaw. It could occur while doing an ioctl(SIOCQETHADPSETSNMPCONTROL) call.
A user/program could use this flaw to crash the kernel resulting in DoS or potentially escalate user privileges on a system.
Upstream fix: ------------- -> http://git.kernel.org/linus/6fb392b1a63ae36c31f62bc3fc8630b49d602b62
Reference: ---------- -> http://seclists.org/oss-sec/2013/q4/330
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.3-1 - Upgrade
Upgrade
Linux kernelto a version that resolves this vulnerability.Fixed in 3.12.1 - Compensating control
If you are affected, avoid invoking the ioctl(SIOC_QETH_ADP_SET_SNMP_CONTROL) SNMP ioctl call that triggers the qeth_snmp_command buffer overflow in drivers/s390/net/qeth_core_main.c (qeth_core_main.c) until the upstream fix is applied.
- Operational
After applying the upstream fix, reboot the system to ensure the updated Linux kernel is running (kernel DoS/buffer overflow risk).
Event History
Frequently Asked Questions
What is the severity of CVE-2013-6381?
The severity of CVE-2013-6381 is high due to its potential for local denial of service and other unspecified impacts.
How do I fix CVE-2013-6381?
To fix CVE-2013-6381, you can update the Linux kernel to version 3.12.2 or later, which addresses this vulnerability.
What does CVE-2013-6381 affect?
CVE-2013-6381 affects various versions of the Linux kernel prior to 3.12.2, particularly the qeth driver.
What kind of attack can CVE-2013-6381 enable?
CVE-2013-6381 can enable local users to exploit the vulnerable SNMP ioctl call leading to denial of service conditions.
Is CVE-2013-6381 exploitable remotely?
No, CVE-2013-6381 is not exploitable remotely as it requires local user access to the affected system.