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ubuntuUbuntuUSN-4930-1
HistoryApr 29, 2021 - 12:00 a.m.

Samba vulnerability

2021-04-2900:00:00
ubuntu.com
91

6.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

7.1 High

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:P/I:P/A:N

0.004 Low

EPSS

Percentile

74.0%

JSON

Releases

  • Ubuntu 21.04
  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Peter Eriksson discovered that Samba incorrectly handled certain negative
idmap cache entries. This issue could result in certain users gaining
unauthorized access to files, contrary to expected behaviour.

OSVersionArchitecturePackageVersionFilename
Ubuntu21.04noarchsamba< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchctdb< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchctdb-dbgsym< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibnss-winbind< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibnss-winbind-dbgsym< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibpam-winbind< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibpam-winbind-dbgsym< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibsmbclient< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibsmbclient-dbgsym< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
Ubuntu21.04noarchlibsmbclient-dev< 2:4.13.3+dfsg-1ubuntu2.1UNKNOWN
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Related

nessus 48
ibm 4
fedora 3
osv 6
redhat 6
openvas 34
cisa 1
rocky 1
ubuntucve 1
almalinux 1
oraclelinux 2
freebsd 1
cbl_mariner 1
altlinux 2
prion 1
centos 1
veracode 1
samba 1
cve 1
redhatcve 1
alpinelinux 1
debiancve 1
amazon 2
suse 2
mageia 1
gentoo 1
ubuntu 1
debian 1
rosalinux 1
nessus
nessus
EulerOS 2.0 SP9 : samba (EulerOS-SA-2021-2256)
2021-08-09 00:00:00
NewStart CGSL CORE 5.04 / MAIN 5.04 : samba Vulnerability (NS-SA-2021-0114)
2021-10-28 00:00:00
SUSE SLES12 Security Update : samba (SUSE-SU-2021:1442-1)
2021-04-30 00:00:00
ibm
ibm
Security Bulletin: A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2021-20254)
2021-12-06 14:13:55
Security Bulletin: Samba for IBM i is affected by CVE-2021-20254
2021-05-13 14:26:31
Security Bulletin: Multiple Samba vulnerability issues in IBM Storwize V7000 Unified
2021-10-14 16:55:46
fedora
fedora
[SECURITY] Fedora 33 Update: samba-4.13.8-0.fc33
2021-05-07 00:48:11
[SECURITY] Fedora 32 Update: samba-4.12.15-0.fc32
2021-05-08 01:10:40
[SECURITY] Fedora 34 Update: samba-4.14.4-0.fc34
2021-04-30 00:56:42
osv
osv
CVE-2021-20254
2021-05-05 14:15:07
Moderate: samba security update
2021-11-02 07:48:59
samba vulnerability
2021-04-29 16:48:57
redhat
redhat
(RHSA-2021:3988) Moderate: samba security update
2021-10-26 07:01:25
(RHSA-2021:2313) Moderate: samba security and bug fix update
2021-06-08 17:58:49
(RHSA-2021:4866) Moderate: samba security update
2021-11-30 15:15:12
openvas
openvas
Huawei EulerOS: Security Advisory for samba (EulerOS-SA-2022-1145)
2022-02-13 00:00:00
SUSE: Security Advisory (SUSE-SU-2021:1438-1)
2021-06-09 00:00:00
Huawei EulerOS: Security Advisory for samba (EulerOS-SA-2021-2347)
2021-09-04 00:00:00
cisa
cisa
Samba Releases Security Updates
2021-04-30 00:00:00
rocky
rocky
samba security update
2021-11-02 07:48:59
ubuntucve
ubuntucve
CVE-2021-20254
2021-04-29 00:00:00
almalinux
almalinux
Moderate: samba security update
2021-11-02 07:48:59
oraclelinux
oraclelinux
samba security and bug fix update
2021-06-09 00:00:00
samba security update
2021-11-02 00:00:00
freebsd
freebsd
samba -- negative idmap cache entries vulnerability
2021-04-29 00:00:00
cbl_mariner
cbl_mariner
CVE-2021-20254 affecting package samba 4.12.5-6
2024-04-26 21:08:25
altlinux
altlinux
Security fix for the ALT Linux 10 package samba version 4.14.4-alt1
2021-04-30 00:00:00
Security fix for the ALT Linux 10 package samba version 4.14.4-alt2
2021-05-06 00:00:00
prion
prion
Design/Logic Flaw
2021-05-05 14:15:00
centos
centos
ctdb, libsmbclient, libwbclient, samba security update
2021-06-14 18:37:00
veracode
veracode
Information Disclosure
2021-05-06 11:27:33
samba
samba
Negative idmap cache entries can cause incorrect
2021-04-29 00:00:00
cve
cve
CVE-2021-20254
2021-05-05 14:15:00
redhatcve
redhatcve
CVE-2021-20254
2021-04-29 10:18:51
alpinelinux
alpinelinux
CVE-2021-20254
2021-05-05 14:15:00
debiancve
debiancve
CVE-2021-20254
2021-05-05 14:15:00
amazon
amazon
Medium: samba
2021-07-01 01:06:00
Critical: samba
2022-02-10 21:59:00
suse
suse
Security update for samba (important)
2021-09-22 00:00:00
Security update for samba (important)
2021-05-01 00:00:00
mageia
mageia
Updated samba and ldb packages fix security vulnerabilities
2021-06-25 17:43:41
gentoo
gentoo
Samba: Multiple vulnerabilities
2021-05-26 00:00:00
ubuntu
ubuntu
Samba vulnerabilities
2021-05-03 00:00:00
debian
debian
[SECURITY] [DLA 2668-1] samba security update
2021-05-29 11:11:27
rosalinux
rosalinux
Advisory ROSA-SA-2021-1967
2021-07-02 18:07:38

6.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

7.1 High

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:P/I:P/A:N

0.004 Low

EPSS

Percentile

74.0%

JSON
Related for USN-4930-1
nessus48ibm4fedora3osv6redhat6openvas34cisa1rocky1ubuntucve1almalinux1oraclelinux2freebsd1cbl_mariner1altlinux2prion1centos1veracode1samba1cve1redhatcve1alpinelinux1debiancve1amazon2suse2mageia1gentoo1ubuntu1debian1rosalinux1