VulnerableCode Package Details - pkg:deb/ubuntu/samba@2:4.11.6%2Bdfsg-0ubuntu1.6

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Vulnerability	Summary	Fixed by
VCID-c19s-mkvt-aaae Aliases: CVE-2021-3671	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.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-j27y-g1w7-aaaa Aliases: CVE-2020-25722	Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-m7gw-h43m-aaag Aliases: CVE-2016-2124	A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-mgzj-9vj2-aaad Aliases: CVE-2021-20254	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 case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.	2:4.11.6+dfsg-0ubuntu1.8 Affected by 9 other vulnerabilities. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }}
VCID-ny1w-v2d1-aaaj Aliases: CVE-2021-23192	A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-qmfb-r5jc-aaaq Aliases: CVE-2021-3738	In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-r2ub-pwv4-aaaa Aliases: CVE-2020-25717	A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-sm2p-s4x5-aaae Aliases: CVE-2020-25719	A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-svdc-81bn-aaak Aliases: CVE-2020-25718	A flaw was found in the way samba, as an Active Directory Domain Controller, is able to support an RODC (read-only domain controller). This would allow an RODC to print administrator tickets.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.
VCID-we9h-xchf-aaam Aliases: CVE-2020-25721	Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.	2:4.13.14+dfsg-0ubuntu0.20.04.1 Affected by 0 other vulnerabilities.

Vulnerability

Summary

Fixed by

VCID-c19s-mkvt-aaae
Aliases:
CVE-2021-3671

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.