CVE-2015-4037 Denial of service in n/a

Low 1.9 Published 26 Aug 2015 Updated 6 Aug 2024

Local attackers can cause QEMU denial of service by pre-creating predictable temporary files used by the SMB feature.

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-2015-4037?

CVE-2015-4037 is a low-severity denial of service vulnerability in Qemu Qemu, published on 26 Aug 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The slirp_smb function in net/slirp.c in QEMU 2.3.0 and earlier creates temporary files with predictable names, which allows local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.*-* files before the program.

Weakness: CWE-17

Which versions are affected by CVE-2015-4037?

It affects 1 product.

Products include Qemu Qemu.

How do I fix CVE-2015-4037?

Apply the vendor's patch.

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-2015-4037 being exploited?

There is no known exploitation of CVE-2015-4037 in the wild and no public exploit code.

All Qemu Qemu vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-4037, GHSA-4xwp-3m3p-vvgr, UBUNTU-CVE-2015-4037.