All Vulnerability Reports

USN-4127-1: Python vulnerabilities


Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected
  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04
Description

It was discovered that Python incorrectly handled certain pickle files. An attacker could possibly use this issue to consume memory, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS (CVE-2018-20406). It was discovered that Python incorrectly validated the domain when handling cookies. An attacker could possibly trick Python into sending cookies to the wrong domain (CVE-2018-20852). Jonathan Birch and Panayiotis Panayiotou discovered that Python incorrectly handled Unicode encoding during NFKC normalization. An attacker could possibly use this issue to obtain sensitive information (CVE-2019-9636, CVE-2019-10160). Colin Read and Nicolas Edet discovered that Python incorrectly handled parsing certain X509 certificates. An attacker could possibly use this issue to cause Python to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS (CVE-2019-5010). It was discovered that Python incorrectly handled certain urls. A remote attacker could possibly use this issue to perform CRLF injection attacks (CVE-2019-9740, CVE-2019-9947). Sihoon Lee discovered that Python incorrectly handled the local_file: scheme. A remote attacker could possibly use this issue to bypass blacklist meschanisms (CVE-2019-9948). CVEs contained in this USN include: CVE-2018-20406, CVE-2019-9636, CVE-2019-9740, CVE-2019-9947, CVE-2019-9948, CVE-2018-20852, CVE-2019-10160, CVE-2019-5010

Affected Pivotal 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
    • 2.6.x versions prior to 2.6.6
    • 2.5.x versions prior to 2.5.11
    • 2.4.x versions prior to 2.4.15
  • PCF Isolation Segment
    • 2.6.x versions prior to 2.6.5
    • 2.5.x versions prior to 2.5.10
    • 2.4.x versions prior to 2.4.14
  • Pivotal Operations Manager
    • 2.7.x versions prior to 2.7.1
    • 2.6.x versions prior to 2.6.11
    • 2.5.x versions prior to 2.5.19
    • 2.4.x versions prior to 2.4.21
  • Pivotal Greenplum for Kubernete
    • All versions prior to 1.9.0
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.

  • Pivotal Application Service
    • 2.6.6
    • 2.5.11
    • 2.4.15
  • PCF Isolation Segment
    • 2.6.5
    • 2.5.10
    • 2.4.14
  • Pivotal Operations Manager
    • 2.7.1
    • 2.6.11
    • 2.5.19
    • 2.4.21
References
Contactez-nous