CVE-2021-20277

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LDAP server process handling the request. The highest threat from this vulnerability is to system availability.

References

https://lists.debian.org/debian-lts-announce/2021/03/msg00036.html

https://bugzilla.redhat.com/show_bug.cgi?id=1941402

https://www.samba.org/samba/security/CVE-2021-20277.html

https://security.netapp.com/advisory/ntap-20210326-0007/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ZXP3ONIY6MB4C5LDZV4YL5KJCES3UX24/

https://lists.fedoraproject.org/archives/list/[email protected]/message/VLZ74IF2N75VQSIHBL4B3P5WKWQCXSRY/

https://www.debian.org/security/2021/dsa-4884

https://lists.fedoraproject.org/archives/list/[email protected]/message/X5J3B6PN5XMXF3OHYBNHDKZ3XFSUGY4L/

https://security.gentoo.org/glsa/202105-22

Details

Source: MITRE

Published: 2021-05-12

Updated: 2021-05-26

Type: CWE-125

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (50 total)

IDNameProductFamilySeverity
156990GLSA-202105-22 : Samba: Multiple vulnerabilitiesNessusGentoo Local Security Checks
medium
156532EulerOS Virtualization 3.0.2.6 : samba (EulerOS-SA-2021-2883)NessusHuawei Local Security Checks
medium
156497EulerOS Virtualization 3.0.2.6 : libldb (EulerOS-SA-2021-2896)NessusHuawei Local Security Checks
high
154617NewStart CGSL CORE 5.04 / MAIN 5.04 : libldb Vulnerability (NS-SA-2021-0106)NessusNewStart CGSL Local Security Checks
high
154574NewStart CGSL MAIN 6.02 : libldb Vulnerability (NS-SA-2021-0130)NessusNewStart CGSL Local Security Checks
high
153580SUSE SLED15 / SLES15 Security Update : samba (SUSE-SU-2021:3187-1)NessusSuSE Local Security Checks
medium
153579openSUSE 15 Security Update : samba (openSUSE-SU-2021:3187-1)NessusSuSE Local Security Checks
medium
153315EulerOS 2.0 SP2 : libldb (EulerOS-SA-2021-2397)NessusHuawei Local Security Checks
high
153277EulerOS 2.0 SP2 : samba (EulerOS-SA-2021-2446)NessusHuawei Local Security Checks
medium
151852RHEL 7 : libldb (RHSA-2021:2786)NessusRed Hat Local Security Checks
high
151789EulerOS 2.0 SP5 : samba (EulerOS-SA-2021-2229)NessusHuawei Local Security Checks
high
151779EulerOS 2.0 SP5 : libldb (EulerOS-SA-2021-2222)NessusHuawei Local Security Checks
high
151341EulerOS Virtualization for ARM 64 3.0.2.0 : libldb (EulerOS-SA-2021-2102)NessusHuawei Local Security Checks
high
151299EulerOS Virtualization for ARM 64 3.0.2.0 : samba (EulerOS-SA-2021-2079)NessusHuawei Local Security Checks
medium
151261EulerOS 2.0 SP9 : samba (EulerOS-SA-2021-2066)NessusHuawei Local Security Checks
high
151257EulerOS Virtualization 3.0.6.6 : samba (EulerOS-SA-2021-2026)NessusHuawei Local Security Checks
high
151247EulerOS 2.0 SP9 : samba (EulerOS-SA-2021-2055)NessusHuawei Local Security Checks
high
151233EulerOS Virtualization 3.0.6.6 : libldb (EulerOS-SA-2021-2038)NessusHuawei Local Security Checks
high
151183EulerOS Virtualization for ARM 64 3.0.6.0 : samba (EulerOS-SA-2021-2014)NessusHuawei Local Security Checks
high
151165EulerOS Virtualization for ARM 64 3.0.6.0 : libldb (EulerOS-SA-2021-2023)NessusHuawei Local Security Checks
high
151029EulerOS 2.0 SP8 : samba (EulerOS-SA-2021-1988)NessusHuawei Local Security Checks
high
151026EulerOS 2.0 SP8 : libldb (EulerOS-SA-2021-1984)NessusHuawei Local Security Checks
high
150377RHEL 7 : libldb (RHSA-2021:2331)NessusRed Hat Local Security Checks
high
150254EulerOS Virtualization 2.9.0 : samba (EulerOS-SA-2021-1968)NessusHuawei Local Security Checks
high
150250EulerOS Virtualization 2.9.1 : samba (EulerOS-SA-2021-1961)NessusHuawei Local Security Checks
high
149699Samba 4.12.x < 4.12.14 / 4.13.x < 4.13.7 / 4.14.x < 4.14.2 Multiple DoSNessusMisc.
high
149562openSUSE Security Update : samba (openSUSE-2021-636)NessusSuSE Local Security Checks
medium
149270SUSE SLES15 Security Update : samba (SUSE-SU-2021:1498-1)NessusSuSE Local Security Checks
medium
149185SUSE SLED15 / SLES15 Security Update : samba (SUSE-SU-2021:1444-1)NessusSuSE Local Security Checks
medium
149162EulerOS 2.0 SP3 : samba (EulerOS-SA-2021-1846)NessusHuawei Local Security Checks
high
149118EulerOS 2.0 SP3 : libldb (EulerOS-SA-2021-1811)NessusHuawei Local Security Checks
high
148914Amazon Linux 2 : libldb (ALAS-2021-1628)NessusAmazon Linux Local Security Checks
high
148899Amazon Linux AMI : libldb (ALAS-2021-1494)NessusAmazon Linux Local Security Checks
high
148801Fedora 33 : 2:samba / libldb (2021-1a8e93a285)NessusFedora Local Security Checks
high
148794Fedora 32 : 2:samba / libldb (2021-c93a3a5d3f)NessusFedora Local Security Checks
high
148686CentOS 8 : libldb (CESA-2021:1197)NessusCentOS Local Security Checks
high
148685RHEL 8 : libldb (RHSA-2021:1214)NessusRed Hat Local Security Checks
high
148684RHEL 8 : libldb (RHSA-2021:1213)NessusRed Hat Local Security Checks
high
148564RHEL 8 : libldb (RHSA-2021:1197)NessusRed Hat Local Security Checks
high
148556Oracle Linux 8 : libldb (ELSA-2021-1197)NessusOracle Linux Local Security Checks
high
148426CentOS 7 : libldb (CESA-2021:1072)NessusCentOS Local Security Checks
high
148382Oracle Linux 7 : libldb (ELSA-2021-1072)NessusOracle Linux Local Security Checks
high
148333RHEL 7 : libldb (RHSA-2021:1072)NessusRed Hat Local Security Checks
high
148314Debian DSA-4884-1 : ldb - security updateNessusDebian Local Security Checks
high
148272Debian DLA-2611-1 : ldb security updateNessusDebian Local Security Checks
high
148207FreeBSD : samba -- Multiple Vulnerabilities (1f6d97da-8f72-11eb-b3f1-005056a311d1)NessusFreeBSD Local Security Checks
high
148175SUSE SLED15 / SLES15 Security Update : ldb (SUSE-SU-2021:0944-1)NessusSuSE Local Security Checks
high
148141openSUSE Security Update : ldb (openSUSE-2021-469)NessusSuSE Local Security Checks
high
148138SUSE SLED15 / SLES15 Security Update : ldb (SUSE-SU-2021:0945-1)NessusSuSE Local Security Checks
high
148089Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 : ldb vulnerabilities (USN-4888-1)NessusUbuntu Local Security Checks
high