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USN-3993-2: curl vulnerability

22 May 2019

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



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


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
Ubuntu 12.04

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


Related notices

  • USN-3993-1: libcurl4-openssl-dev, libcurl4-doc, libcurl3-gnutls, libcurl4, libcurl4-nss-dev, curl, libcurl4-gnutls-dev, libcurl3, libcurl3-nss