CVE-2018-18849 Memory corruption in n/a
Out-of-bounds access in QEMU's LSI53C895A SCSI controller allows attackers to cause denial of service or execute arbitrary code.
- 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-2018-18849?
CVE-2018-18849 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 17 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Qemu 3.0.0, lsi_do_msgin in hw/scsi/lsi53c895a.c allows out-of-bounds access by triggering an invalid msg_len value.
Weakness: CWE-125
Which versions are affected by CVE-2018-18849?
It affects 4 products.
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Opensuse Leap, Qemu Qemu.
How do I fix CVE-2018-18849?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-18849 being exploited?
There is no known exploitation of CVE-2018-18849 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-18849, GHSA-q3gm-vp97-w99p, UBUNTU-CVE-2018-18849.