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USN-3834-1: Perl vulnerabilities

By: | December 27, 2018

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USN-3834-1: Perl vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

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

Description

Jayakrishna Menon discovered that Perl incorrectly handled Perl_my_setenv. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-18311)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18312)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service. (CVE-2018-18313)

Jakub Wilk discovered that Perl incorrectly handled certain regular expressions. An attacker could use this issue to cause Perl to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18314)

CVEs contained in this USN include: CVE-2018-18311, CVE-2018-18312, CVE-2018-18313, CVE-2018-18314

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Cloud Foundry BOSH trusty-stemcells are vulnerable, including:
    • 3586.x versions prior to 3586.65
    • 3541.x versions prior to 3541.69
    • 3468.x versions prior to 3468.90
    • 3445.x versions prior to 3445.87
    • 3421.x versions prior to 3421.104
    • All other stemcells not listed.
  • Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
    • 170.x versions prior to 170.12
    • 97.x versions prior to 97.39
    • All other stemcells not listed.
  • All versions of Cloud Foundry cflinuxfs2 prior to 1.253.0
  • All versions of Cloud Foundry cflinuxfs3 prior to 0.44.0

Mitigation

Users of affected products are strongly encouraged to follow one of the mitigations below:

  • The Cloud Foundry project recommends upgrading the following BOSH trusty-stemcells:
    • Upgrade 3586.x versions to 3586.65
    • Upgrade 3541.x versions to 3541.69
    • Upgrade 3468.x versions to 3468.90
    • Upgrade 3445.x versions to 3445.87
    • Upgrade 3421.x versions to 3421.104
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • The Cloud Foundry project recommends upgrading the following BOSH xenial-stemcells:
    • Upgrade 170.x versions to 170.12
    • Upgrade 97.x versions to 97.39
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 version 1.253.0 or later.
  • The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs3 version 0.44.0 or later.

References

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR

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