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Debian LTS Advisory DLA-2463-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Roberto C. Sánchez
November 22, 2020 https://wiki.debian.org/LTS
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Package : samba
Version : 2:4.5.16+dfsg-1+deb9u3
CVE ID : CVE-2020-1472 CVE-2020-10704 CVE-2020-10730 CVE-2020-10745
CVE-2020-10760 CVE-2020-14303 CVE-2020-14318 CVE-2020-14323
CVE-2020-14383
Multiple vulnerabilities have been discovered in Samba, a SMB/CIFS file,
print, and login server for Unix.
CVE-2020-1472
Unauthenticated domain controller compromise by subverting Netlogon
cryptography. This vulnerability includes both ZeroLogon and
non-ZeroLogon variations.
CVE-2020-10704
An unauthorized user can trigger a denial of service via a stack
overflow in the AD DC LDAP server.
CVE-2020-10730
NULL pointer de-reference and use-after-free in Samba AD DC LDAP
Server with ASQ, VLV and paged_results.
CVE-2020-10745
Denial of service resulting from abuse of compression of replies to
NetBIOS over TCP/IP name resolution and DNS packets causing excessive
CPU load on the Samba AD DC.
CVE-2020-10760
The use of the paged_results or VLV controls against the Global
Catalog LDAP server on the AD DC will cause a use-after-free.
CVE-2020-14303
Denial of service resulting from CPU spin and and inability to
process further requests once the AD DC NBT server receives an empty
(zero-length) UDP packet to port 137.
CVE-2020-14318
Missing handle permissions check in ChangeNotify
CVE-2020-14323
Unprivileged user can crash winbind via invalid lookupsids DoS
CVE-2020-14383
DNS server crash via invalid records resulting from uninitialized
variables
For Debian 9 stretch, these problems have been fixed in version
2:4.5.16+dfsg-1+deb9u3.
We recommend that you upgrade your samba packages.
For the detailed security status of samba please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/samba
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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