RHSA-2009:1209

Executive Summary

Summary
Title	curl security update

Informations
Name	RHSA-2009:1209	First vendor Publication	2009-08-13
Vendor	RedHat	Last vendor Modification	2009-08-13
Severity (Vendor)	Moderate	Revision	01

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score	7.5	Attack Range	Network
Cvss Impact Score	6.4	Attack Complexity	Low
Cvss Expoit Score	10	Authentification	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated curl packages that fix security issues are now available for Red
Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

cURL is a tool for getting files from FTP, HTTP, Gopher, Telnet, and Dict
servers, using any of the supported protocols. cURL is designed to work
without user interaction or any kind of interactivity.

Scott Cantor reported that cURL is affected by the previously published
"null prefix attack", caused by incorrect handling of NULL characters in
X.509 certificates. If an attacker is able to get a carefully-crafted
certificate signed by a trusted Certificate Authority, the attacker could
use the certificate during a man-in-the-middle attack and potentially
confuse cURL into accepting it by mistake. (CVE-2009-2417)

cURL users should upgrade to these updated packages, which contain a
backported patch to correct these issues. All running applications using
libcurl must be restarted for the update to take effect.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

516181 - CVE-2009-2417 curl: incorrect verification of SSL certificate with NUL in name

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2009-1209.html

CWE : Common Weakness Enumeration

id	Name
CWE-310	Cryptographic Issues

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:8542

Oval ID:	oval:org.mitre.oval:def:8542
Title:	VMware curl vulnerability
Description:	lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2009-2417	Version:	2
Platform(s):	VMWare ESX Server 4	Product(s):
Definition Synopsis:
VMware ESX Server 4.0 is installed AND Patch ESX400-200911232-SG is not installed

Definition Id: oval:org.mitre.oval:def:10114

Oval ID:	oval:org.mitre.oval:def:10114
Title:	lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Description:	lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2009-2417	Version:	5
Platform(s):	Red Hat Enterprise Linux 3 CentOS Linux 3 Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5	Product(s):
Definition Synopsis:
OS Section: RHEL3, CentOS3 RHEL3 or CentOS3 The operating system installed on the system is Red Hat Enterprise Linux 3 AND CentOS Linux 3.x AND Configuration section curl-devel is earlier than 0:7.10.6-10.rhel3 AND curl is earlier than 0:7.10.6-10.rhel3 OR OS Section: RHEL4, CentOS4, Oracle Linux 4 RHEL4, CentOS4 or Oracle Linux 4 The operating system installed on the system is Red Hat Enterprise Linux 4 AND CentOS Linux 4.x AND Oracle Linux 4.x AND Configuration section curl-devel is earlier than 0:7.12.1-11.1.el4_8.1 AND curl is earlier than 0:7.12.1-11.1.el4_8.1 OR OS Section: RHEL5, CentOS5, Oracle Linux 5 RHEL5, CentOS5 or Oracle Linux 5 The operating system installed on the system is Red Hat Enterprise Linux 5 AND CentOS Linux 5.x AND Oracle Linux 5.x AND Configuration section curl-devel is earlier than 0:7.15.5-2.1.el5_3.5 AND curl is earlier than 0:7.15.5-2.1.el5_3.5

CPE : Common Platform Enumeration

Type	Description	Count
Application	Curl Libcurl cpe:/a:curl:libcurl:7.9.8 cpe:/a:curl:libcurl:7.9.7 cpe:/a:curl:libcurl:7.9.6 cpe:/a:curl:libcurl:7.9.5 cpe:/a:curl:libcurl:7.9.3 cpe:/a:curl:libcurl:7.9.2 cpe:/a:curl:libcurl:7.9.1 cpe:/a:curl:libcurl:7.9 cpe:/a:curl:libcurl:7.8.1 cpe:/a:curl:libcurl:7.8 cpe:/a:curl:libcurl:7.7.3 cpe:/a:curl:libcurl:7.7.2 cpe:/a:curl:libcurl:7.7.1 cpe:/a:curl:libcurl:7.7 cpe:/a:curl:libcurl:7.6.1 cpe:/a:curl:libcurl:7.6 cpe:/a:curl:libcurl:7.5.2 cpe:/a:curl:libcurl:7.5.1 cpe:/a:curl:libcurl:7.5 cpe:/a:curl:libcurl:7.4.2 cpe:/a:curl:libcurl:7.4.1 cpe:/a:curl:libcurl:7.4 cpe:/a:curl:libcurl:7.19.5 cpe:/a:curl:libcurl:7.19.4 cpe:/a:curl:libcurl:7.19.3 cpe:/a:curl:libcurl:7.19.2 cpe:/a:curl:libcurl:7.19.1 cpe:/a:curl:libcurl:7.19.0 cpe:/a:curl:libcurl:7.18.2 cpe:/a:curl:libcurl:7.18.1 cpe:/a:curl:libcurl:7.18.0 cpe:/a:curl:libcurl:7.17.1 cpe:/a:curl:libcurl:7.17.0 cpe:/a:curl:libcurl:7.16.3 cpe:/a:curl:libcurl:7.15.3 cpe:/a:curl:libcurl:7.15.2 cpe:/a:curl:libcurl:7.15.1 cpe:/a:curl:libcurl:7.15 cpe:/a:curl:libcurl:7.14.1 cpe:/a:curl:libcurl:7.14 cpe:/a:curl:libcurl:7.13.2 cpe:/a:curl:libcurl:7.13.1 cpe:/a:curl:libcurl:7.13 cpe:/a:curl:libcurl:7.12.3 cpe:/a:curl:libcurl:7.12.2 cpe:/a:curl:libcurl:7.12.1 cpe:/a:curl:libcurl:7.12.0 cpe:/a:curl:libcurl:7.12 cpe:/a:curl:libcurl:7.11.2 cpe:/a:curl:libcurl:7.11.1 cpe:/a:curl:libcurl:7.11.0 cpe:/a:curl:libcurl:7.10.8 cpe:/a:curl:libcurl:7.10.7 cpe:/a:curl:libcurl:7.10.6 cpe:/a:curl:libcurl:7.10.5 cpe:/a:curl:libcurl:7.10.4 cpe:/a:curl:libcurl:7.10.3 cpe:/a:curl:libcurl:7.10.2 cpe:/a:curl:libcurl:7.10.1 cpe:/a:curl:libcurl:7.10	60
Application	Libcurl Libcurl cpe:/a:libcurl:libcurl:7.16.3 cpe:/a:libcurl:libcurl:7.15.3 cpe:/a:libcurl:libcurl:7.15.2 cpe:/a:libcurl:libcurl:7.15.1 cpe:/a:libcurl:libcurl:7.15 cpe:/a:libcurl:libcurl:7.14.1 cpe:/a:libcurl:libcurl:7.14 cpe:/a:libcurl:libcurl:7.13.2 cpe:/a:libcurl:libcurl:7.13.1 cpe:/a:libcurl:libcurl:7.13 cpe:/a:libcurl:libcurl:7.12.3 cpe:/a:libcurl:libcurl:7.12.2 cpe:/a:libcurl:libcurl:7.12.1 cpe:/a:libcurl:libcurl:7.12	14

Open Source Vulnerability Database (OSVDB)

id	Description
62879	SSH Tectia Audit Player X.509 Certificate Authority (CA) Common Name Null Byt...
56994	cURL/libcURL w/ OpenSSL X.509 Certificate Authority (CA) Common Name Null Byt...