USN-3993-2: curl vulnerability

22 May 2019

curl vulnerability

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

  • Ubuntu 14.04 ESM
  • Ubuntu 12.04 ESM

Summary

curl could be made to crash if it received a specially crafted data.

Software Description

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

Details

USN-3993-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that curl incorrectly handled memory when receiving data from a TFTP server. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2019-5436)

Update instructions

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

Ubuntu 14.04 ESM
curl - 7.35.0-1ubuntu2.20+esm2
libcurl3 - 7.35.0-1ubuntu2.20+esm2
libcurl3-gnutls - 7.35.0-1ubuntu2.20+esm2
libcurl3-nss - 7.35.0-1ubuntu2.20+esm2
Ubuntu 12.04 ESM
curl - 7.22.0-3ubuntu4.26
libcurl3 - 7.22.0-3ubuntu4.26
libcurl3-gnutls - 7.22.0-3ubuntu4.26
libcurl3-nss - 7.22.0-3ubuntu4.26

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