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USN-4416-1: GNU C Library vulnerabilities


Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected
  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04
Description

Florian Weimer discovered that the GNU C Library incorrectly handled certain memory operations. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-12133)

It was discovered that the GNU C Library incorrectly handled certain SSE2-optimized memmove operations. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-18269)

It was discovered that the GNU C Library incorrectly handled certain pathname operations. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-11236)

It was discovered that the GNU C Library incorrectly handled certain AVX-512-optimized mempcpy operations. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-11237)

It was discovered that the GNU C Library incorrectly handled certain hostname loookups. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-19591)

Jakub Wilk discovered that the GNU C Library incorrectly handled certain memalign functions. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-6485)

It was discovered that the GNU C Library incorrectly ignored the LD_PREFER_MAP_32BIT_EXEC environment variable after security transitions. A local attacker could use this issue to bypass ASLR restrictions. (CVE-2019-19126)

It was discovered that the GNU C Library incorrectly handled certain regular expressions. A remote attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-9169)

It was discovered that the GNU C Library incorrectly handled certain bit patterns. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2020-10029)

It was discovered that the GNU C Library incorrectly handled certain signal trampolines on PowerPC. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-1751)

It was discovered that the GNU C Library incorrectly handled tilde expansion. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-1752)

CVEs contained in this USN include: CVE-2017-12133, CVE-2017-18269, CVE-2018-11236, CVE-2018-11237, CVE-2018-19591, CVE-2018-6485, CVE-2019-9169, CVE-2019-19126, CVE-2020-10029, CVE-2020-1751, CVE-2020-1752

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

Vulnerable Cloud Foundry components individually listed here. Impacted stemcells may be updated independently of upgrading Tanzu Application Service or Isolation Segment.

  • Isolation Segment
    • 2.7.x versions prior to 2.7.22
    • 2.8.x versions prior to 2.8.16
    • 2.9.x versions prior to 2.9.10
    • 2.10.x versions prior to 2.10.2
  • Operations Manager
    • 2.6 versions prior to 2.6.27
    • 2.7 versions prior to 2.7.22
    • 2.8 versions prior to 2.8.12
    • 2.9 versions prior to 2.9.8
    • 2.10 versions prior to 2.10.1
  • Platform Automation Toolkit
    • 4.1.x versions prior to 4.1.20
    • 4.2.x versions prior to 4.2.15
    • 4.3.x versions prior to 4.3.12
    • 4.4.x versions prior to 4.4.4
  • Tanzu Greenplum for Kubernetes
    • All versions prior to 2.0.0
  • VMware Tanzu Application Service for VMs
    • 2.7.x versions prior to 2.7.21
    • 2.8.x versions prior to 2.8.16
    • 2.9.x versions prior to 2.9.10
    • 2.10.x versions prior to 2.10.2
Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. The Cloud Foundry security team recommends upgrading the affected OSS components listed here if applicable. Upgrade VMware Tanzu products that use earlier versions of CF components to new Tanzu releases using new versions linked above. 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
    • 2.7.22
    • 2.8.16
    • 2.9.10
    • 2.10.2
  • Operations Manager
    • 2.6.27
    • 2.7.22
    • 2.8.12
    • 2.9.8
    • 2.10.1
  • Platform Automation Toolkit
    • 4.1.20
    • 4.2.15
    • 4.3.12
    • 4.4.4
  • Tanzu Greenplum for Kubernetes
    • 2.0.0
  • VMware Tanzu Application Service for VMs
    • 2.7.21
    • 2.8.16
    • 2.9.10
    • 2.10.2
References
History

2020-12-11: Initial vulnerability report published.