CVE-2018-10839 Integer overflow in Qemu-kvm

What is CVE-2018-10839?

CVE-2018-10839 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 16 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user inside guest could use this flaw to crash the Qemu process resulting in DoS.

Weakness: CWE-190, CWE-121

Which versions are affected by CVE-2018-10839?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2018-10839?

Apply the vendor's patch.

Is CVE-2018-10839 being exploited?

There is no known exploitation of CVE-2018-10839 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-10839, GHSA-c6cg-p33g-mj6j, UBUNTU-CVE-2018-10839.