USN-3805-1: curl vulnerabilities
Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 14.04
- Canonical Ubuntu 16.04
- Canonical Ubuntu 18.04
Description
Harry Sintonen discovered that curl incorrectly handled SASL authentication. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-16839)
Brian Carpenter discovered that curl incorrectly handled memory when closing certain handles. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-16840)
Brian Carpenter discovered that the curl command-line tool incorrectly handled error messages. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2018-16842)
CVEs contained in this USN include: CVE-2018-16839, CVE-2018-16840, CVE-2018-16842
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 3586.54
- 3541.x versions prior to 3541.59
- 3468.x versions prior to 3468.86
- 3445.x versions prior to 3445.81
- 3421.x versions prior to 3421.98
- All other stemcells not listed.
- Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
- 170.x versions prior to 170.5
- 97.x versions prior to 97.31
- All other stemcells not listed.
- All versions of Cloud Foundry cflinuxfs2 prior to 1.245.0
- All versions of Cloud Foundry cflinuxfs3 prior to 0.34.0
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 3586.54
- Upgrade 3541.x versions to 3541.59
- Upgrade 3468.x versions to 3468.86
- Upgrade 3445.x versions to 3445.81
- Upgrade 3421.x versions to 3421.98
- 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 170.5
- Upgrade 97.x versions to 97.31
- 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 1.245.0 or later.
- The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs3 version 0.34.0 or later.
