Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04

Description

Hanno Böck discovered that gdb incorrectly handled certain malformed AOUT headers in PE executables. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-8501)

It was discovered that gdb incorrectly handled printing bad bytes in Intel Hex objects. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-9939)

It was discovered that gdb incorrectly handled certain string operations. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-2226)

It was discovered that gdb incorrectly handled parsing certain binaries. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-4487, CVE-2016-4488, CVE-2016-4489, CVE-2016-4490, CVE-2016-4492, CVE-2016-4493, CVE-2016-6131)

It was discovered that gdb incorrectly handled parsing certain binaries. If a user or automated system were tricked into processing a specially crafted binary, a remote attacker could use this issue to cause gdb to crash, resulting in a denial of service. (CVE-2016-4491)

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Cloud Foundry BOSH stemcells are vulnerable, including:
  • 3312.x versions prior to 3312.32
  • 3363.x versions prior to 3363.29
  • 3421.x versions prior to 3421.18
  • All other stemcells not listed.
• All versions of Cloud Foundry cflinuxfs2 prior to 1.142.0

Mitigation

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

• The Cloud Foundry project recommends upgrading the following BOSH stemcells:
  • Upgrade 3312.x versions prior to 3312.32
  • Upgrade 3363.x versions prior to 3363.29
  • Upgrade 3421.x versions prior to 3421.18
  • 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 1.142.0 or later.

References

• USN-3367-1
• CVE-2014-8501
• CVE-2014-9939
• CVE-2016-2226
• CVE-2016-4487
• CVE-2016-4488
• CVE-2016-4489
• CVE-2016-4490
• CVE-2016-4492
• CVE-2016-4493
• CVE-2016-6131
• CVE-2016-4491