CVE-2020-10756 Information disclosure in Slirp

What is CVE-2020-10756?

CVE-2020-10756 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 9 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.

Weakness: CWE-125

Which versions are affected by CVE-2020-10756?

It affects 6 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Libslirp Project Libslirp, Opensuse Leap, Redhat Enterprise Linux, Redhat Openstack.

How do I fix CVE-2020-10756?

Upgrade to a fixed version.

Is CVE-2020-10756 being exploited?

There is no known exploitation of CVE-2020-10756 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
• How this page is made

Also known as DEBIAN-CVE-2020-10756, SUSE-SU-2020:1915-1, UBUNTU-CVE-2020-10756, USN-4437-1, openSUSE-SU-2020:0987-1, openSUSE-SU-2020:0994-1.