Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04

Description

Daniel Stenberg discovered that curl incorrectly handled large floating point output. A remote attacker could use this issue to cause curl 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-2016-9586)

Even Rouault discovered that curl incorrectly handled large file names when doing TFTP transfers. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly obtain sensitive memory contents. (CVE-2017-1000100)

Brian Carpenter and Yongji Ouyang discovered that curl incorrectly handled numerical range globbing. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly obtain sensitive memory contents. (CVE-2017-1000101)

Max Dymond discovered that curl incorrectly handled FTP PWD responses. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service. (CVE-2017-1000254)

Brian Carpenter discovered that curl incorrectly handled the –write-out command line option. A local attacker could possibly use this issue to obtain sensitive memory contents. (CVE-2017-7407)

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Cloud Foundry BOSH stemcells are vulnerable, including:
  • 3363.x versions prior to 3363.40
  • 3421.x versions prior to 3421.29
  • 3445.x versions prior to 3445.15
  • All other stemcells not listed.
• All versions of Cloud Foundry cflinuxfs2 prior to 1.160.0

Mitigation

OSS users are strongly encouraged to follow one of the mitigations below:

• The Cloud Foundry project recommends upgrading the following BOSH stemcells:
  • Upgrade 3363.x versions prior to 3363.40
  • Upgrade 3421.x versions prior to 3421.29
  • Upgrade 3445.x versions prior to 3445.15
  • 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 1.160.0 or later.

References

• USN-3441-1
• CVE-2016-9586
• CVE-2017-1000100
• CVE-2017-1000101
• CVE-2017-1000254
• CVE-2017-7407