CVE-2019-3812 Information disclosure in qemu

What is CVE-2019-3812?

CVE-2019-3812 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 19 Feb 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Weakness: CWE-125, CWE-119

Which versions are affected by CVE-2019-3812?

It affects 4 products.

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Opensuse Leap, Qemu Qemu.

How do I fix CVE-2019-3812?

Apply the vendor's patch.

Is CVE-2019-3812 being exploited?

There is no known exploitation of CVE-2019-3812 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-2019-3812, GHSA-4mh7-g8hh-qp2p, UBUNTU-CVE-2019-3812.