CVE-2020-10760

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-06 · updated 2026-06-17
Weakness: CWE-416

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.

Affected products

Canonical Ubuntu Linux: 18.04, 19.10, 20.04
Fedoraproject Fedora: 31
openSUSE Leap: 15.1, 15.2
Samba: from 4.5.0 before 4.10.17; from 4.11.0 before 4.11.11; from 4.12.0 before 4.12.4 — fixed in 4.10.17, 4.11.11, 4.12.4

How to fix

Upgrade to a fixed version: Samba 4.10.17, 4.11.11, 4.12.4. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html
https://bugzilla.redhat.com/show_bug.cgi?id=1849509%3B
https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/
https://security.gentoo.org/glsa/202007-15
https://usn.ubuntu.com/4409-1/
https://www.samba.org/samba/security/CVE-2020-10760.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html

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