Several security issues were fixed in curl.
It was discovered that curl incorrectly handled certain data. An attacker could possibly use this to cause a denial of service or even to get access to sensitive data. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10.
31 January 2018
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in curl.
It was discovered that curl incorrectly handled certain data. An attacker could possibly use this to cause a denial of service or even to get access to sensitive data. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10.
It was discovered that curl could accidentally leak authentication data. An attacker could possibly use this to get access to sensitive information. (CVE-2018-1000007)
The problem can be corrected by updating your system to the following package versions:
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.