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Package "libwbclient0"

Name: libwbclient0

Description:

Samba winbind client library
Latest version: 2:4.3.11+dfsg-0ubuntu0.16.04.34
Release: xenial (16.04)
Level: updates
Repository: main
Head package: samba
Homepage: http://www.samba.org

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Other versions of "libwbclient0" in Xenial

Repository Area Version
base main 2:4.3.8+dfsg-0ubuntu1
security main 2:4.3.11+dfsg-0ubuntu0.16.04.34

Changelog

Version: 2:4.3.11+dfsg-0ubuntu0.16.04.34 2021-04-29 20:08:05 UTC

  samba (2:4.3.11+dfsg-0ubuntu0.16.04.34) xenial-security; urgency=medium

  * SECURITY UPDATE: wrong group entries via negative idmap cache entries
    - debian/patches/CVE-2021-20254.patch: Simplify sids_to_unixids() in
      source3/passdb/lookup_sid.c.
    - CVE-2021-20254

 -- Marc Deslauriers <email address hidden> Wed, 14 Apr 2021 08:53:58 -0400
Source diff to previous version
CVE-2021-20254 Negative idmap cache entries can cause incorrect group entries in the Samba file server process token

Version: 2:4.3.11+dfsg-0ubuntu0.16.04.32 2020-11-03 15:07:10 UTC

  samba (2:4.3.11+dfsg-0ubuntu0.16.04.32) xenial-security; urgency=medium

  * SECURITY UPDATE: Missing handle permissions check in ChangeNotify
    - debian/patches/CVE-2020-14318-*.patch: ensure change notifies can't
      get set unless the directory handle is open for SEC_DIR_LIST in
      source4/torture/smb2/notify.c, source3/smbd/notify.c.
    - CVE-2020-14318
  * SECURITY UPDATE: Unprivileged user can crash winbind
    - debian/patches/CVE-2020-14323-*.patch: fix invalid lookupsids DoS in
      source3/winbindd/winbindd_lookupsids.c,
      source4/torture/winbind/struct_based.c.
    - CVE-2020-14323
  * SECURITY UPDATE: DNS server crash via invalid records
    - debian/patches/CVE-2020-14383-*.patch: ensure variable initialization
      with NULL and do not crash when additional data not found in
      source4/rpc_server/dnsserver/dcerpc_dnsserver.c.
    - CVE-2020-14383

 -- Marc Deslauriers <email address hidden> Fri, 16 Oct 2020 06:52:47 -0400
Source diff to previous version
CVE-2020-14318 Missing handle permissions check in SMB1/2/3 ChangeNotify
CVE-2020-14323 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
CVE-2020-14383 An authenticated user can crash the DCE/RPC DNS with easily crafted records

Version: 2:4.3.11+dfsg-0ubuntu0.16.04.31 2020-09-30 15:07:15 UTC

  samba (2:4.3.11+dfsg-0ubuntu0.16.04.31) xenial-security; urgency=medium

  * SECURITY UPDATE: Unauthenticated domain controller compromise by
    subverting Netlogon cryptography (ZeroLogon)
    - debian/patches/zerologon-*.patch: backport upstream patches:
      + For compatibility reasons, allow specifying an insecure netlogon
        configuration per machine. See the following link for examples:
        https://www.samba.org/samba/security/CVE-2020-1472.html
      + Add additional server checks for the protocol attack in the
        client-specified challenge to provide some protection when
        'server schannel = no/auto' and avoid the false-positive results
        when running the proof-of-concept exploit.
    - CVE-2020-1472

 -- Marc Deslauriers <email address hidden> Thu, 24 Sep 2020 19:25:08 -0400
Source diff to previous version
CVE-2020-1472 An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, u

Version: 2:4.3.11+dfsg-0ubuntu0.16.04.30 2020-09-17 13:06:21 UTC

  samba (2:4.3.11+dfsg-0ubuntu0.16.04.30) xenial-security; urgency=medium

  * SECURITY UPDATE: Unauthenticated domain controller compromise by
    subverting Netlogon cryptography
    - debian/patches/CVE-2020-1472-1.patch: switch "client schannel"
      default to "yes" instead of "auto".
    - debian/patches/CVE-2020-1472-2.patch: switch "server schannel"
      default to "yes" instead of "auto".
    - CVE-2020-1472

 -- Marc Deslauriers <email address hidden> Wed, 16 Sep 2020 09:11:44 -0400
Source diff to previous version
CVE-2020-1472 An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, u

Version: 2:4.3.11+dfsg-0ubuntu0.16.04.29 2020-08-10 16:06:27 UTC

  samba (2:4.3.11+dfsg-0ubuntu0.16.04.29) xenial-security; urgency=medium

  * SECURITY UPDATE: Empty UDP packet DoS in Samba AD DC nbtd
    - debian/patches/CVE-2020-14303.patch: fix busy loop on empty UDP
      packet in libcli/nbt/nbtsocket.c.
    - CVE-2020-14303

 -- Marc Deslauriers <email address hidden> Fri, 07 Aug 2020 13:39:56 -0400
CVE-2020-14303 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


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