USN-3441-1: curl vulnerabilities

Ubuntu Security Notice USN-3441-1

10th October, 2017

curl vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in curl.

Software description

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

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. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(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 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 version:

Ubuntu 17.04:
libcurl3-nss

7.52.1-4ubuntu1.2
curl

7.52.1-4ubuntu1.2
libcurl3-gnutls

7.52.1-4ubuntu1.2
libcurl3

7.52.1-4ubuntu1.2
Ubuntu 16.04 LTS:
libcurl3-nss

7.47.0-1ubuntu2.3
curl

7.47.0-1ubuntu2.3
libcurl3-gnutls

7.47.0-1ubuntu2.3
libcurl3

7.47.0-1ubuntu2.3
Ubuntu 14.04 LTS:
libcurl3-nss

7.35.0-1ubuntu2.11
curl

7.35.0-1ubuntu2.11
libcurl3-gnutls

7.35.0-1ubuntu2.11
libcurl3

7.35.0-1ubuntu2.11

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

CVE-2016-9586,

CVE-2017-1000100,

CVE-2017-1000101,

CVE-2017-1000254,

CVE-2017-7407

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