CVE-2019-12068 Denial of service in n/a

What is CVE-2019-12068?

CVE-2019-12068 is a low-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 24 Sep 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances 's->dsp' index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well.

Weakness: CWE-835

Which versions are affected by CVE-2019-12068?

It affects 3 products.

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

How do I fix CVE-2019-12068?

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-2019-12068 being exploited?

There is no known exploitation of CVE-2019-12068 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-2019-12068, GHSA-4699-632x-4vxr, UBUNTU-CVE-2019-12068.