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USN-6238-1: Samba vulnerabilities

Severity

Medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 22.04

Description

It was discovered that Samba incorrectly handled Winbind NTLM authentication responses. An attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2022-2127) Andreas Schneider discovered that Samba incorrectly enforced SMB2 packet signing. A remote attacker could possibly use this issue to obtain or modify sensitive information. This issue only affected Ubuntu 23.04. (CVE-2023-3347) Florent Saudel and Arnaud Gatignolof discovered that Samba incorrectly handled certain Spotlight requests. A remote attacker could possibly use this issue to cause Samba to consume resources, leading to a denial of service. (CVE-2023-34966, CVE-2023-34967) Ralph Boehme and Stefan Metzmacher discovered that Samba incorrectly handled paths returned by Spotlight requests. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2023-34968) Update Instructions: Run `sudo pro fix USN-6238-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libwbclient-dev - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba - 2:4.15.13+dfsg-0ubuntu0.20.04.3 libnss-winbind - 2:4.15.13+dfsg-0ubuntu0.20.04.3 libpam-winbind - 2:4.15.13+dfsg-0ubuntu0.20.04.3 libsmbclient - 2:4.15.13+dfsg-0ubuntu0.20.04.3 ctdb - 2:4.15.13+dfsg-0ubuntu0.20.04.3 smbclient - 2:4.15.13+dfsg-0ubuntu0.20.04.3 libwbclient0 - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-testsuite - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-common-bin - 2:4.15.13+dfsg-0ubuntu0.20.04.3 winbind - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-dsdb-modules - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-dev - 2:4.15.13+dfsg-0ubuntu0.20.04.3 libsmbclient-dev - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-vfs-modules - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-common - 2:4.15.13+dfsg-0ubuntu0.20.04.3 registry-tools - 2:4.15.13+dfsg-0ubuntu0.20.04.3 samba-libs - 2:4.15.13+dfsg-0ubuntu0.20.04.3 python3-samba - 2:4.15.13+dfsg-0ubuntu0.20.04.3 No subscription required

CVEs contained in this USN include: CVE-2022-2127, CVE-2023-3347, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

• Isolation Segment
  • 3.0.x versions prior to 3.0.15
  • 4.0.x versions prior to 4.0.6+LTS-T

• VMware Tanzu Application Service for VMs
  • 3.0.x versions prior to 3.0.15
  • 4.0.x versions prior to 4.0.6+LTS-T

Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. On the Tanzu Network product page for each release, check the Depends On section and/or Release Notes for this information. Releases that have fixed this issue include:

• Isolation Segment
  • 3.0.15
  • 4.0.6+LTS-T

• VMware Tanzu Application Service for VMs
  • 3.0.15
  • 4.0.6+LTS-T

References

• https://ubuntu.com/security/CVE-2022-2127
• https://ubuntu.com/security/CVE-2023-3347
• https://ubuntu.com/security/CVE-2023-34966
• https://ubuntu.com/security/CVE-2023-34967
• https://ubuntu.com/security/CVE-2023-34968
• https://ubuntu.com/security/notices/USN-6238-1

History

2023-09-01: Initial vulnerability report published.