CVE-2020-10700

2020-04-2810:39:49

redhat.com

access.redhat.com

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:N/I:N/A:P

0.004 Low

EPSS

Percentile

73.3%

JSON

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.

Mitigation

As per upstream, the crash is hard to trigger, and relies in particular on the chain of child and grandchild links being queried with ASQ. Malicious users without write access will need to find a suitable chain within the existing directory layout.