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USN-4903-1: curl vulnerability

7 April 2021

curl could be made to expose sensitive information over the network.



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


Viktor Szakats discovered that curl did not strip off user credentials
from referrer header fields. A remote attacker could possibly use this
issue to obtain sensitive information.

Update instructions

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

Ubuntu 14.04

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


Related notices

  • USN-4898-1: libcurl4-openssl-dev, libcurl3-gnutls, libcurl4-nss-dev, libcurl4-doc, curl, libcurl3-nss, libcurl4-gnutls-dev, libcurl4, libcurl3