CVE-2010-4247 Denial of service in n/a
Guest OS users can cause a denial of service via infinite loop in Xen blkback or blktap drivers by sending large request indices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2010-4247?
CVE-2010-4247 is a medium-severity denial of service vulnerability in n/a, published on 11 Jan 2011. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.
Weakness: CWE-20
Which versions are affected by CVE-2010-4247?
It affects 1 product.
Products include Citrix Xen.
How do I fix CVE-2010-4247?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2010-4247 being exploited?
There is no known exploitation of CVE-2010-4247 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-9hwc-j324-r98v.