[USN-3457-1] curl vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Mon Oct 23 13:21:44 UTC 2017

Ubuntu Security Notice USN-3457-1
October 23, 2017

curl vulnerability

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

- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS


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


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

Update instructions:

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

Ubuntu 17.10:
  curl                            7.55.1-1ubuntu2.1
  libcurl3                        7.55.1-1ubuntu2.1
  libcurl3-gnutls                 7.55.1-1ubuntu2.1
  libcurl3-nss                    7.55.1-1ubuntu2.1

Ubuntu 17.04:
  curl                            7.52.1-4ubuntu1.3
  libcurl3                        7.52.1-4ubuntu1.3
  libcurl3-gnutls                 7.52.1-4ubuntu1.3
  libcurl3-nss                    7.52.1-4ubuntu1.3

Ubuntu 16.04 LTS:
  curl                            7.47.0-1ubuntu2.4
  libcurl3                        7.47.0-1ubuntu2.4
  libcurl3-gnutls                 7.47.0-1ubuntu2.4
  libcurl3-nss                    7.47.0-1ubuntu2.4

Ubuntu 14.04 LTS:
  curl                            7.35.0-1ubuntu2.12
  libcurl3                        7.35.0-1ubuntu2.12
  libcurl3-gnutls                 7.35.0-1ubuntu2.12
  libcurl3-nss                    7.35.0-1ubuntu2.12

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


Package Information:

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