what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-5822-1

Ubuntu Security Notice USN-5822-1
Posted Jan 24, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5822-1 - It was discovered that Samba incorrectly handled the bad password count logic. A remote attacker could possibly use this issue to bypass bad passwords lockouts. This issue was only addressed in Ubuntu 22.10. Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2021-20251, CVE-2022-3437, CVE-2022-38023, CVE-2022-42898, CVE-2022-45141
SHA-256 | 7e28dc77ffbc9a0bdb6d12d1db8027cea88238b892667a9f4f8b17fd154d8b4f

Ubuntu Security Notice USN-5822-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5822-1
January 24, 2023

samba vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Samba.

Software Description:
- samba: SMB/CIFS file, print, and login server for Unix

Details:

It was discovered that Samba incorrectly handled the bad password count
logic. A remote attacker could possibly use this issue to bypass bad
passwords lockouts. This issue was only addressed in Ubuntu 22.10.
(CVE-2021-20251)

Evgeny Legerov discovered that Samba incorrectly handled buffers in
certain GSSAPI routines of Heimdal. A remote attacker could possibly use
this issue to cause Samba to crash, resulting in a denial of service.
(CVE-2022-3437)

Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos
keys. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-37966, CVE-2022-37967)

It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure
Channel. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-38023)

Greg Hudson discovered that Samba incorrectly handled PAC parsing. On
32-bit systems, a remote attacker could use this issue to escalate
privileges, or possibly execute arbitrary code. (CVE-2022-42898)

Joseph Sutton discovered that Samba could be forced to issue rc4-hmac
encrypted Kerberos tickets. A remote attacker could possibly use this issue
to escalate privileges. This issue only affected Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-45141)

WARNING: The fixes included in these updates introduce several important
behavior changes which may cause compatibility problems interacting with
systems still expecting the former behavior. Please see the following
upstream advisories for more information:

https://www.samba.org/samba/security/CVE-2022-37966.html
https://www.samba.org/samba/security/CVE-2022-37967.html
https://www.samba.org/samba/security/CVE-2022-38023.html

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.10:
samba 2:4.16.8+dfsg-0ubuntu1

Ubuntu 22.04 LTS:
samba 2:4.15.13+dfsg-0ubuntu1

Ubuntu 20.04 LTS:
samba 2:4.13.17~dfsg-0ubuntu1.20.04.4

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References:
https://ubuntu.com/security/notices/USN-5822-1
CVE-2021-20251, CVE-2022-3437, CVE-2022-37966, CVE-2022-37967,
CVE-2022-38023, CVE-2022-42898, CVE-2022-45141

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.16.8+dfsg-0ubuntu1
https://launchpad.net/ubuntu/+source/samba/2:4.15.13+dfsg-0ubuntu1
https://launchpad.net/ubuntu/+source/samba/2:4.13.17~dfsg-0ubuntu1.20.04.4
Login or Register to add favorites

File Archive:

June 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jun 1st
    0 Files
  • 2
    Jun 2nd
    0 Files
  • 3
    Jun 3rd
    18 Files
  • 4
    Jun 4th
    21 Files
  • 5
    Jun 5th
    0 Files
  • 6
    Jun 6th
    57 Files
  • 7
    Jun 7th
    6 Files
  • 8
    Jun 8th
    0 Files
  • 9
    Jun 9th
    0 Files
  • 10
    Jun 10th
    12 Files
  • 11
    Jun 11th
    27 Files
  • 12
    Jun 12th
    38 Files
  • 13
    Jun 13th
    16 Files
  • 14
    Jun 14th
    14 Files
  • 15
    Jun 15th
    0 Files
  • 16
    Jun 16th
    0 Files
  • 17
    Jun 17th
    16 Files
  • 18
    Jun 18th
    0 Files
  • 19
    Jun 19th
    0 Files
  • 20
    Jun 20th
    0 Files
  • 21
    Jun 21st
    0 Files
  • 22
    Jun 22nd
    0 Files
  • 23
    Jun 23rd
    0 Files
  • 24
    Jun 24th
    0 Files
  • 25
    Jun 25th
    0 Files
  • 26
    Jun 26th
    0 Files
  • 27
    Jun 27th
    0 Files
  • 28
    Jun 28th
    0 Files
  • 29
    Jun 29th
    0 Files
  • 30
    Jun 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close