CVE-2020-10730

07.07.2020, 14:15

A NULL pointer dereference, or possible use-after-free flaw was found in Samba AD LDAP server in versions before 4.10.17, before 4.11.11 and before 4.12.4. Although some versions of Samba shipped with Red Hat Enterprise Linux do not support Samba in AD mode, the affected code is shipped with the libldb package. This flaw allows an authenticated user to possibly trigger a use-after-free or NULL pointer dereference. The highest threat from this vulnerability is to system availability.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	6.5 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
redhat	CNA	---				---
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 85%

Vendor	Product	Version
samba	samba	4.5.0 ≤ 𝑥 < 4.10.17
samba	samba	4.11.0 ≤ 𝑥 < 4.11.11
samba	samba	4.12.0 ≤ 𝑥 < 4.12.4
redhat	storage	3.0
opensuse	leap	15.1
opensuse	leap	15.2
debian	debian_linux	9.0
debian	debian_linux	10.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

ldb

bullseye (security)	2:2.2.3-2~deb11u2 fixed
bullseye	2:2.2.3-2~deb11u2 fixed
stretch	not-affected
buster	postponed

samba

bullseye (security)	2:4.13.13+dfsg-1~deb11u6 fixed
bullseye	2:4.13.13+dfsg-1~deb11u6 fixed
stretch	not-affected
buster	postponed
bookworm	2:4.17.12+dfsg-0+deb12u1 fixed
bookworm (security)	2:4.17.12+dfsg-0+deb12u1 fixed
sid	2:4.21.1+dfsg-2 fixed
trixie	2:4.21.1+dfsg-2 fixed

Ubuntu Releases

Ubuntu Product

Codename

samba

focal	Fixed 2:4.11.6+dfsg-0ubuntu1.3 released
eoan	Fixed 2:4.10.7+dfsg-0ubuntu2.6 released
bionic	Fixed 2:4.7.6+dfsg~ubuntu-0ubuntu2.17 released
xenial	not-affected
trusty	not-affected