CVE-2020-10760 Use after free in Samba

What is CVE-2020-10760?

CVE-2020-10760 is a medium-severity use after free vulnerability in Canonical Ubuntu Linux, published on 6 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A use-after-free flaw was found in all samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in a AC DC configuration. A Samba LDAP user could use this flaw to crash samba.

Weakness: CWE-416

Which versions are affected by CVE-2020-10760?

It affects 4 products.

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

How do I fix CVE-2020-10760?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-10760 being exploited?

There is no known exploitation of CVE-2020-10760 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 ALPINE-CVE-2020-10760, DEBIAN-CVE-2020-10760, ECHO-790e-5c5e-b6ac, GHSA-wf3q-4cm3-gfjr, UBUNTU-CVE-2020-10760.