USN-3710-1: curl vulnerability

11 July 2018

curl vulnerability

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

  • Ubuntu 18.04 LTS
  • Ubuntu 17.10


curl could be made to crash or run programs if it received specially crafted network traffic.

Software Description

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


Peter Wu discovered that curl incorrectly handled certain SMTP buffers. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 18.04 LTS
curl - 7.58.0-2ubuntu3.2
libcurl3-gnutls - 7.58.0-2ubuntu3.2
libcurl3-nss - 7.58.0-2ubuntu3.2
libcurl4 - 7.58.0-2ubuntu3.2
Ubuntu 17.10
curl - 7.55.1-1ubuntu2.6
libcurl3 - 7.55.1-1ubuntu2.6
libcurl3-gnutls - 7.55.1-1ubuntu2.6
libcurl3-nss - 7.55.1-1ubuntu2.6

To update your system, please follow these instructions:

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