CVE-2015-3143

cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remote attackers to connect as other users via an unauthenticated request, a similar issue to CVE-2014-0015.

Updated curl packages fix security vulnerabilities:

NTLM-authenticated connections could be wrongly reused for requests without any credentials set, leading to HTTP requests being sent over the connection authenticated as a different user (CVE-2015-3143).

When parsing HTTP cookies, if the parsed cookie's "path" element consists of a single double-quote, libcurl would try to write to an invalid heap memory address. This could allow remote attackers to cause a denial of service (crash) (CVE-2015-3145).

When doing HTTP requests using the Negotiate authentication method along with NTLM, the connection used would not be marked as authenticated, making it possible to reuse it and send requests for one user over the connection authenticated as a different user (CVE-2015-3148).

These are all security issues fixed in the curl-7.51.0-1.1 package on the GA media of openSUSE Tumbleweed.

This curl update fixes the following security issues:

* bnc#868627: wrong re-use of connections (CVE-2014-0138).
* bnc#868629: IP address wildcard certificate validation
  (CVE-2014-0139).
* bnc#870444: --insecure option inappropriately enforcing security
  safeguard.

Security Issue references:

* CVE-2014-0138
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0138>
* CVE-2014-0139
  <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0139>

curl was updated to fix five security issues.

The following vulnerabilities were fixed:

• CVE-2015-3143: curl could re-use NTML authenticateds connections
• CVE-2015-3144: curl could access memory out of bounds with zero length host names
• CVE-2015-3145: curl cookie parser could access memory out of boundary
• CVE-2015-3148: curl could treat Negotiate as not connection-oriented
• CVE-2015-3153: curl could have sent sensitive HTTP headers also to proxies

cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remote attackers to connect as other users via an unauthenticated request, a similar issue to CVE-2014-0015.

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)