All Vulnerability Reports

USN-3817-1: Python vulnerabilities


Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 14.04
  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

It was discovered that Python incorrectly handled large amounts of data. A remote attacker could use this issue to cause Python to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-1000030)

It was discovered that Python incorrectly handled running external commands in the shutil module. A remote attacker could use this issue to cause Python to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-1000802)

It was discovered that Python incorrectly used regular expressions vulnerable to catastrophic backtracking. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-1060, CVE-2018-1061)

It was discovered that Python failed to initialize Expat’s hash salt. A remote attacker could possibly use this issue to cause hash collisions, leading to a denial of service. (CVE-2018-14647)

CVEs contained in this USN include: CVE-2018-1000030, CVE-2018-1000802, CVE-2018-1060, CVE-2018-1061, CVE-2018-14647

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 Pivotal Application Service or PCF Isolation Segment.
  • Pivotal Application Service includes vulnerable stemcells and container rootfs in the following releases:
    • 2.3.x versions prior to 2.3.4
    • 2.2.x versions prior to 2.2.10
    • 2.1.x versions prior to 2.1.18
  • PCF Isolation Segment includes vulnerable stemcells and container rootfs in the following releases:
    • 2.3.x versions prior to 2.3.4
    • 2.2.x versions prior to 2.2.9
    • 2.1.x versions prior to 2.1.15
  • Pivotal Operations Manager is vulnerable in the following releases:
    • 2.3.x versions prior to 2.3.6
    • 2.2.x versions prior to 2.2.10
    • 2.1.x versions prior to 2.1.19

Mitigation

Users of affected versions should apply the following mitigation:

  • The Cloud Foundry security team recommends upgrading BOSH to the affected OSS components listed here if applicable.
  • Upgrade Pivotal products that use earlier versions of CF components to new Pivotal releases using new versions linked above. On the Pivotal 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:
    • Pivotal Application Service: 2.3.4, 2.2.10, 2.1.18
    • PCF Isolation Segment: 2.3.4, 2.2.9, 2.1.15
    • Pivotal Operations Manager: 2.3.6, 2.2.10, 2.1.19

References