USN-2591-1: curl vulnerabilities

30 April 2015

curl vulnerabilities

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

  • Ubuntu 15.04
  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in curl.

Software Description

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

Details

Paras Sethia discovered that curl could incorrectly re-use NTLM HTTP credentials when subsequently connecting to the same host over HTTP. (CVE-2015-3143)

Hanno Böck discovered that curl incorrectly handled zero-length host names. If a user or automated system were tricked into using a specially crafted host name, an attacker could possibly use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-3144)

Hanno Böck discovered that curl incorrectly handled cookie path elements. If a user or automated system were tricked into parsing a specially crafted cookie, an attacker could possibly 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, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-3145)

Isaac Boukris discovered that when using Negotiate authenticated connections, curl could incorrectly authenticate the entire connection and not just specific HTTP requests. (CVE-2015-3148)

Yehezkel Horowitz and Oren Souroujon discovered that curl sent HTTP headers both to servers and proxies by default, contrary to expectations. This issue only affected Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-3153)

Update instructions

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

Ubuntu 15.04
libcurl3 - 7.38.0-3ubuntu2.2
libcurl3-gnutls - 7.38.0-3ubuntu2.2
libcurl3-nss - 7.38.0-3ubuntu2.2
Ubuntu 14.10
libcurl3 - 7.37.1-1ubuntu3.4
libcurl3-gnutls - 7.37.1-1ubuntu3.4
libcurl3-nss - 7.37.1-1ubuntu3.4
Ubuntu 14.04 LTS
libcurl3 - 7.35.0-1ubuntu2.5
libcurl3-gnutls - 7.35.0-1ubuntu2.5
libcurl3-nss - 7.35.0-1ubuntu2.5
Ubuntu 12.04 LTS
libcurl3 - 7.22.0-3ubuntu4.14
libcurl3-gnutls - 7.22.0-3ubuntu4.14
libcurl3-nss - 7.22.0-3ubuntu4.14

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