6.8 - USN-3441-2

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in curl.

Software Description: - curl: HTTP, HTTPS, and FTP client and client libraries

Details:

USN-3441-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Daniel Stenberg discovered that curl incorrectly handled large  floating point output. A remote attacker could use this issue to cause  curl to crash, resulting in a denial of service, or possibly execute  arbitrary code. (CVE-2016-9586)

 Even Rouault discovered that curl incorrectly handled large file names  when doing TFTP transfers. A remote attacker could use this issue to  cause curl to crash, resulting in a denial of service, or possibly  obtain sensitive memory contents. (CVE-2017-1000100)

 Brian Carpenter and Yongji Ouyang discovered that curl incorrectly  handled numerical range globbing. A remote attacker could use this  issue to cause curl to crash, resulting in a denial of service, or  possibly obtain sensitive memory contents. (CVE-2017-1000101)

 Max Dymond discovered that curl incorrectly handled FTP PWD responses.  A remote attacker could use this issue to cause curl to crash,  resulting in a denial of service. (CVE-2017-1000254)

 Brian Carpenter discovered that curl incorrectly handled IMAP FETCH  response lines. A remote attacker could use this issue to cause curl  to crash, resulting in a denial of service, or possibly execute  arbitrary code.(CVE-2017-1000257)

 Brian Carpenter discovered that curl incorrectly handled the --write-  out command line option. A local attacker could possibly use this  issue to obtain sensitive memory contents. (CVE-2017-7407)

Update instructions:

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

Ubuntu 12.04 ESM:  curl                            7.22.0-3ubuntu4.18  libcurl3                        7.22.0-3ubuntu4.18  libcurl3-gnutls                 7.22.0-3ubuntu4.18  libcurl3-nss                    7.22.0-3ubuntu4.18

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

References:  https://www.ubuntu.com/usn/usn-3441-2  https://www.ubuntu.com/usn/usn-3441-1  CVE-2016-9586, CVE-2017-1000100, CVE-2017-1000254, CVE-2017-1000257,  CVE-2017-7407