USN-5379-1: klibc vulnerabilities

24079

25 July 2022

25 July 2022

CLOSED

LOW

CVE-2021-31870,CVE-2021-31871,CVE-2021-31872,CVE-2021-31873

Severity

low

Vendor

VMware Tanzu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

It was discovered that klibc did not properly perform some mathematical operations, leading to an integer overflow. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31870) It was discovered that klibc did not properly handled some memory allocations on 64 bit systems. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31871) It was discovered that klibc did not properly handled some file sizes values on 32 bit systems. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31872) It was discovered that klibc did not properly handled some memory allocations. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31873) Update Instructions: Run `sudo ua fix USN-5379-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: klibc-utils - 2.0.4-8ubuntu1.16.04.4+esm1 libklibc - 2.0.4-8ubuntu1.16.04.4+esm1 libklibc-dev - 2.0.4-8ubuntu1.16.04.4+esm1 Available with UA Infra or UA Desktop: https://ubuntu.com/advantage

CVEs contained in this USN include: CVE-2021-31870, CVE-2021-31871, CVE-2021-31872, CVE-2021-31873

Affected VMware Products and Versions

Severity is low unless otherwise noted.

  • Isolation Segment
    • 2.7.x versions prior to 2.7.45, or later versions with Xenial Stemcells prior to 456.261
    • 2.10.x versions prior to 2.10.25, or later versions with Xenial Stemcells prior to 621.236
    • 2.11.x versions prior to 2.11.14, or later versions with Xenial Stemcells prior to 621.236
    • 2.12.x versions prior to 2.12.8, or later versions with Xenial Stemcells prior to 621.236
  • Operations Manager
    • 2.9.x versions prior to 2.9.38
    • 2.10.x versions prior to 2.10.39
  • VMware Tanzu Application Service for VMs
    • 2.7.x versions prior to 2.7.50, or later versions with Xenial Stemcells prior to 456.261
    • 2.10.x versions prior to 2.10.32, or later versions with Xenial Stemcells prior to 621.236
    • 2.11.x versions prior to 2.11.20, or later versions with Xenial Stemcells prior to 621.236
    • 2.12.x versions prior to 2.12.13, or later versions with Xenial Stemcells prior to 621.236

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
    • 2.7.45, and upgrade Xenial Stemcells to 456.261 or greater
    • 2.10.25, and upgrade Xenial Stemcells to 621.236 or greater
    • 2.11.14, and upgrade Xenial Stemcells to 621.236 or greater
    • 2.12.8, and upgrade Xenial Stemcells to 621.236 or greater
  • Operations Manager
    • 2.9.38
    • 2.10.39
  • VMware Tanzu Application Service for VMs
    • 2.7.50, and upgrade Xenial Stemcells to 456.261 or greater
    • 2.10.32, and upgrade Xenial Stemcells to 621.236 or greater
    • 2.11.20, and upgrade Xenial Stemcells to 621.236 or greater
    • 2.12.13, and upgrade Xenial Stemcells to 621.236 or greater

References

History

2022-07-25: Initial vulnerability report published.