CVE-2020-10700

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-05-04 · updated 2026-06-17
Weakness: CWE-416

Description

A use-after-free flaw was found in the way samba AD DC LDAP servers, handled 'Paged Results' control is combined with the 'ASQ' control. A malicious user in a samba AD could use this flaw to cause denial of service. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.

Affected products

Fedoraproject Fedora: 30, 31, 32
openSUSE Leap: 15.2
Samba: from 4.10.0 before 4.10.15; from 4.11.0 before 4.11.8; from 4.12.0 before 4.12.2 — fixed in 4.10.15, 4.11.8, 4.12.2

How to fix

Upgrade to a fixed version: Samba 4.10.15, 4.11.8, 4.12.2. Check the vendor advisory for mitigations.

References

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=CVE-2020-10700
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WG54NRMES2GTURZKZH6H4BGXCD3OMJDJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/
https://security.gentoo.org/glsa/202007-15
https://www.samba.org/samba/security/CVE-2020-10700.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=CVE-2020-10700
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/

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