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CVE-2021-3671

Low priority

Some fixes available 16 of 20

A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

2 affected packages

heimdal, samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
heimdal Not affected Not affected Fixed Fixed
samba Fixed Fixed Fixed Fixed
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CVE-2021-20254

Medium priority
Fixed

A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the...

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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CVE-2021-20277

High priority
Fixed

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...

2 affected packages

ldb, samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ldb Fixed Fixed
samba Not affected Not affected
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CVE-2020-27840

High priority
Fixed

A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The...

2 affected packages

ldb, samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
ldb Fixed Fixed
samba Not affected Not affected
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CVE-2020-14383

Medium priority
Fixed

A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy...

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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CVE-2020-14323

Medium priority
Fixed

A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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CVE-2020-14318

Medium priority
Fixed

A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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CVE-2020-1472

Medium priority
Fixed

An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who...

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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CVE-2020-14303

Medium priority

Some fixes available 4 of 5

A flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash.

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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CVE-2020-10760

Medium priority
Fixed

A use-after-free flaw was found in all samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in a AC DC configuration. A Samba LDAP user could use this flaw to crash samba.

1 affected package

samba

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
samba Fixed Fixed
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