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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
(Red Hat Issues Fix) OpenSSL asn1_d2i_read_bio() Buffer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1026978
SecurityTracker URL:  http://securitytracker.com/id/1026978
CVE Reference:   CVE-2012-2110   (Links to External Site)
Date:  Apr 25 2012
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 0.9.8w and 1.0.0i
Description:   A vulnerability was reported in OpenSSL. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted data to the target application using OpenSSL to potentially trigger a heap overflow in the asn1_d2i_read_bio() function and execute arbitrary code on the target system. The code will run with the privileges of the target application.

Applications that use ASN.1 BIO or FILE based functions to read untrusted DER format data are affected. The d2i_*_bio and d2i_*_fp type of functions are affected.

Applications that use the memory based ASN1 functions (e.g., d2i_X509, d2i_PKCS12 etc) are not affected.

The SSL/TLS code is not affected.

Applications using only the PEM routines are not affected.

S/MIME and CMS applications that use the built-in MIME parser SMIME_read_PKCS7 and SMIME_read_CMS functions are affected.

Tavis Ormandy, Google Security Team, reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   Red Hat has issued a fix for CVE-2012-2110.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2012-0522.html

Vendor URL:  www.openssl.org/news/secadv_20120424.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  3, 4, 5.3, 5.6, 6.0, 6.1

Message History:   This archive entry is a follow-up to the message listed below.
Apr 20 2012 OpenSSL asn1_d2i_read_bio() Buffer Overflow Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2012:0522-01] Important: openssl security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: openssl security update
Advisory ID:       RHSA-2012:0522-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0522.html
Issue date:        2012-04-25
CVE Names:         CVE-2012-2110 
=====================================================================

1. Summary:

Updated openssl packages that fix one security issue are now available for
Red Hat Enterprise Linux 3 and 4 Extended Life Cycle Support; Red Hat
Enterprise Linux 5.3 Long Life; and Red Hat Enterprise Linux 5.6, 6.0 and
6.1 Extended Update Support.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (v. 3 ELS) - i386
Red Hat Enterprise Linux AS (v. 4 ELS) - i386, ia64, x86_64
Red Hat Enterprise Linux ES (v. 3 ELS) - i386
Red Hat Enterprise Linux ES (v. 4 ELS) - i386, x86_64
Red Hat Enterprise Linux EUS (v. 5.6 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Long Life (v. 5.3 server) - i386, ia64, x86_64
Red Hat Enterprise Linux Server EUS (v. 6.0) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server EUS (v. 6.1) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.0) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.1) - i386, ppc64, s390x, x86_64

3. Description:

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)
and Transport Layer Security (TLS v1) protocols, as well as a
full-strength, general purpose cryptography library.

Multiple numeric conversion errors, leading to a buffer overflow, were
found in the way OpenSSL parsed ASN.1 (Abstract Syntax Notation One) data
from BIO (OpenSSL's I/O abstraction) inputs. Specially-crafted DER
(Distinguished Encoding Rules) encoded data read from a file or other BIO
input could cause an application using the OpenSSL library to crash or,
potentially, execute arbitrary code. (CVE-2012-2110)

All OpenSSL users should upgrade to these updated packages, which contain
a backported patch to resolve this issue. For the update to take effect,
all services linked to the OpenSSL library must be restarted, or the system
rebooted.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

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

814185 - CVE-2012-2110 openssl: asn1_d2i_read_bio integer errors leading to buffer overflow

6. Package List:

Red Hat Enterprise Linux AS (v. 3 ELS):

Source:
openssl-0.9.7a-33.28.src.rpm

i386:
openssl-0.9.7a-33.28.i386.rpm
openssl-0.9.7a-33.28.i686.rpm
openssl-debuginfo-0.9.7a-33.28.i386.rpm
openssl-debuginfo-0.9.7a-33.28.i686.rpm
openssl-devel-0.9.7a-33.28.i386.rpm
openssl-perl-0.9.7a-33.28.i386.rpm

Red Hat Enterprise Linux ES (v. 3 ELS):

Source:
openssl-0.9.7a-33.28.src.rpm

i386:
openssl-0.9.7a-33.28.i386.rpm
openssl-0.9.7a-33.28.i686.rpm
openssl-debuginfo-0.9.7a-33.28.i386.rpm
openssl-debuginfo-0.9.7a-33.28.i686.rpm
openssl-devel-0.9.7a-33.28.i386.rpm
openssl-perl-0.9.7a-33.28.i386.rpm

Red Hat Enterprise Linux AS (v. 4 ELS):

Source:
openssl-0.9.7a-43.20.el4.src.rpm

i386:
openssl-0.9.7a-43.20.el4.i386.rpm
openssl-0.9.7a-43.20.el4.i686.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i386.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i686.rpm
openssl-devel-0.9.7a-43.20.el4.i386.rpm
openssl-perl-0.9.7a-43.20.el4.i386.rpm

ia64:
openssl-0.9.7a-43.20.el4.i686.rpm
openssl-0.9.7a-43.20.el4.ia64.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i686.rpm
openssl-debuginfo-0.9.7a-43.20.el4.ia64.rpm
openssl-devel-0.9.7a-43.20.el4.ia64.rpm
openssl-perl-0.9.7a-43.20.el4.ia64.rpm

x86_64:
openssl-0.9.7a-43.20.el4.i686.rpm
openssl-0.9.7a-43.20.el4.x86_64.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i386.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i686.rpm
openssl-debuginfo-0.9.7a-43.20.el4.x86_64.rpm
openssl-devel-0.9.7a-43.20.el4.i386.rpm
openssl-devel-0.9.7a-43.20.el4.x86_64.rpm
openssl-perl-0.9.7a-43.20.el4.x86_64.rpm

Red Hat Enterprise Linux ES (v. 4 ELS):

Source:
openssl-0.9.7a-43.20.el4.src.rpm

i386:
openssl-0.9.7a-43.20.el4.i386.rpm
openssl-0.9.7a-43.20.el4.i686.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i386.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i686.rpm
openssl-devel-0.9.7a-43.20.el4.i386.rpm
openssl-perl-0.9.7a-43.20.el4.i386.rpm

x86_64:
openssl-0.9.7a-43.20.el4.i686.rpm
openssl-0.9.7a-43.20.el4.x86_64.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i386.rpm
openssl-debuginfo-0.9.7a-43.20.el4.i686.rpm
openssl-debuginfo-0.9.7a-43.20.el4.x86_64.rpm
openssl-devel-0.9.7a-43.20.el4.i386.rpm
openssl-devel-0.9.7a-43.20.el4.x86_64.rpm
openssl-perl-0.9.7a-43.20.el4.x86_64.rpm

Red Hat Enterprise Linux Long Life (v. 5.3 server):

Source:
openssl-0.9.8e-7.el5_3.2.src.rpm

i386:
openssl-0.9.8e-7.el5_3.2.i386.rpm
openssl-0.9.8e-7.el5_3.2.i686.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.i386.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.i686.rpm
openssl-devel-0.9.8e-7.el5_3.2.i386.rpm
openssl-perl-0.9.8e-7.el5_3.2.i386.rpm

ia64:
openssl-0.9.8e-7.el5_3.2.i686.rpm
openssl-0.9.8e-7.el5_3.2.ia64.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.i686.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.ia64.rpm
openssl-devel-0.9.8e-7.el5_3.2.ia64.rpm
openssl-perl-0.9.8e-7.el5_3.2.ia64.rpm

x86_64:
openssl-0.9.8e-7.el5_3.2.i686.rpm
openssl-0.9.8e-7.el5_3.2.x86_64.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.i386.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.i686.rpm
openssl-debuginfo-0.9.8e-7.el5_3.2.x86_64.rpm
openssl-devel-0.9.8e-7.el5_3.2.i386.rpm
openssl-devel-0.9.8e-7.el5_3.2.x86_64.rpm
openssl-perl-0.9.8e-7.el5_3.2.x86_64.rpm

Red Hat Enterprise Linux EUS (v. 5.6 server):

Source:
openssl-0.9.8e-12.el5_6.9.src.rpm

i386:
openssl-0.9.8e-12.el5_6.9.i386.rpm
openssl-0.9.8e-12.el5_6.9.i686.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.i386.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.i686.rpm
openssl-devel-0.9.8e-12.el5_6.9.i386.rpm
openssl-perl-0.9.8e-12.el5_6.9.i386.rpm

ia64:
openssl-0.9.8e-12.el5_6.9.i686.rpm
openssl-0.9.8e-12.el5_6.9.ia64.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.i686.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.ia64.rpm
openssl-devel-0.9.8e-12.el5_6.9.ia64.rpm
openssl-perl-0.9.8e-12.el5_6.9.ia64.rpm

ppc:
openssl-0.9.8e-12.el5_6.9.ppc.rpm
openssl-0.9.8e-12.el5_6.9.ppc64.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.ppc.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.ppc64.rpm
openssl-devel-0.9.8e-12.el5_6.9.ppc.rpm
openssl-devel-0.9.8e-12.el5_6.9.ppc64.rpm
openssl-perl-0.9.8e-12.el5_6.9.ppc.rpm

s390x:
openssl-0.9.8e-12.el5_6.9.s390.rpm
openssl-0.9.8e-12.el5_6.9.s390x.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.s390.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.s390x.rpm
openssl-devel-0.9.8e-12.el5_6.9.s390.rpm
openssl-devel-0.9.8e-12.el5_6.9.s390x.rpm
openssl-perl-0.9.8e-12.el5_6.9.s390x.rpm

x86_64:
openssl-0.9.8e-12.el5_6.9.i686.rpm
openssl-0.9.8e-12.el5_6.9.x86_64.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.i386.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.i686.rpm
openssl-debuginfo-0.9.8e-12.el5_6.9.x86_64.rpm
openssl-devel-0.9.8e-12.el5_6.9.i386.rpm
openssl-devel-0.9.8e-12.el5_6.9.x86_64.rpm
openssl-perl-0.9.8e-12.el5_6.9.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.0):

Source:
openssl-1.0.0-4.el6_0.3.src.rpm

i386:
openssl-1.0.0-4.el6_0.3.i686.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.i686.rpm
openssl-devel-1.0.0-4.el6_0.3.i686.rpm

ppc64:
openssl-1.0.0-4.el6_0.3.ppc.rpm
openssl-1.0.0-4.el6_0.3.ppc64.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.ppc.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.ppc64.rpm
openssl-devel-1.0.0-4.el6_0.3.ppc.rpm
openssl-devel-1.0.0-4.el6_0.3.ppc64.rpm

s390x:
openssl-1.0.0-4.el6_0.3.s390.rpm
openssl-1.0.0-4.el6_0.3.s390x.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.s390.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.s390x.rpm
openssl-devel-1.0.0-4.el6_0.3.s390.rpm
openssl-devel-1.0.0-4.el6_0.3.s390x.rpm

x86_64:
openssl-1.0.0-4.el6_0.3.i686.rpm
openssl-1.0.0-4.el6_0.3.x86_64.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.i686.rpm
openssl-debuginfo-1.0.0-4.el6_0.3.x86_64.rpm
openssl-devel-1.0.0-4.el6_0.3.i686.rpm
openssl-devel-1.0.0-4.el6_0.3.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.1):

Source:
openssl-1.0.0-10.el6_1.6.src.rpm

i386:
openssl-1.0.0-10.el6_1.6.i686.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.i686.rpm
openssl-devel-1.0.0-10.el6_1.6.i686.rpm

ppc64:
openssl-1.0.0-10.el6_1.6.ppc.rpm
openssl-1.0.0-10.el6_1.6.ppc64.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.ppc.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.ppc64.rpm
openssl-devel-1.0.0-10.el6_1.6.ppc.rpm
openssl-devel-1.0.0-10.el6_1.6.ppc64.rpm

s390x:
openssl-1.0.0-10.el6_1.6.s390.rpm
openssl-1.0.0-10.el6_1.6.s390x.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.s390.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.s390x.rpm
openssl-devel-1.0.0-10.el6_1.6.s390.rpm
openssl-devel-1.0.0-10.el6_1.6.s390x.rpm

x86_64:
openssl-1.0.0-10.el6_1.6.i686.rpm
openssl-1.0.0-10.el6_1.6.x86_64.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.i686.rpm
openssl-debuginfo-1.0.0-10.el6_1.6.x86_64.rpm
openssl-devel-1.0.0-10.el6_1.6.i686.rpm
openssl-devel-1.0.0-10.el6_1.6.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.0):

Source:
openssl-1.0.0-4.el6_0.3.src.rpm

i386:
openssl-debuginfo-1.0.0-4.el6_0.3.i686.rpm
openssl-perl-1.0.0-4.el6_0.3.i686.rpm
openssl-static-1.0.0-4.el6_0.3.i686.rpm

ppc64:
openssl-debuginfo-1.0.0-4.el6_0.3.ppc64.rpm
openssl-perl-1.0.0-4.el6_0.3.ppc64.rpm
openssl-static-1.0.0-4.el6_0.3.ppc64.rpm

s390x:
openssl-debuginfo-1.0.0-4.el6_0.3.s390x.rpm
openssl-perl-1.0.0-4.el6_0.3.s390x.rpm
openssl-static-1.0.0-4.el6_0.3.s390x.rpm

x86_64:
openssl-debuginfo-1.0.0-4.el6_0.3.x86_64.rpm
openssl-perl-1.0.0-4.el6_0.3.x86_64.rpm
openssl-static-1.0.0-4.el6_0.3.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.1):

Source:
openssl-1.0.0-10.el6_1.6.src.rpm

i386:
openssl-debuginfo-1.0.0-10.el6_1.6.i686.rpm
openssl-perl-1.0.0-10.el6_1.6.i686.rpm
openssl-static-1.0.0-10.el6_1.6.i686.rpm

ppc64:
openssl-debuginfo-1.0.0-10.el6_1.6.ppc64.rpm
openssl-perl-1.0.0-10.el6_1.6.ppc64.rpm
openssl-static-1.0.0-10.el6_1.6.ppc64.rpm

s390x:
openssl-debuginfo-1.0.0-10.el6_1.6.s390x.rpm
openssl-perl-1.0.0-10.el6_1.6.s390x.rpm
openssl-static-1.0.0-10.el6_1.6.s390x.rpm

x86_64:
openssl-debuginfo-1.0.0-10.el6_1.6.x86_64.rpm
openssl-perl-1.0.0-10.el6_1.6.x86_64.rpm
openssl-static-1.0.0-10.el6_1.6.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-2110.html
https://access.redhat.com/security/updates/classification/#important
http://www.openssl.org/news/secadv_20120419.txt

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2012 Red Hat, Inc.
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