USN-3805-1: curl vulnerabilities

31 October 2018

curl vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in curl.

Software Description

  • curl - HTTP, HTTPS, and FTP client and client libraries

Details

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)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10
curl - 7.61.0-1ubuntu2.2
libcurl3-gnutls - 7.61.0-1ubuntu2.2
libcurl3-nss - 7.61.0-1ubuntu2.2
libcurl4 - 7.61.0-1ubuntu2.2
Ubuntu 18.04 LTS
curl - 7.58.0-2ubuntu3.5
libcurl3-gnutls - 7.58.0-2ubuntu3.5
libcurl3-nss - 7.58.0-2ubuntu3.5
libcurl4 - 7.58.0-2ubuntu3.5
Ubuntu 16.04 LTS
curl - 7.47.0-1ubuntu2.11
libcurl3 - 7.47.0-1ubuntu2.11
libcurl3-gnutls - 7.47.0-1ubuntu2.11
libcurl3-nss - 7.47.0-1ubuntu2.11
Ubuntu 14.04 LTS
curl - 7.35.0-1ubuntu2.19
libcurl3 - 7.35.0-1ubuntu2.19
libcurl3-gnutls - 7.35.0-1ubuntu2.19
libcurl3-nss - 7.35.0-1ubuntu2.19

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References