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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:  1026977
SecurityTracker URL:  http://securitytracker.com/id/1026977
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.

The Red Hat advisory is available at:

[Editor's note: This fix is not affected by CVE-2012-2131.]

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:  5, 6

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-2012:0518-01] Important: openssl security update

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

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

Synopsis:          Important: openssl security update
Advisory ID:       RHSA-2012:0518-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0518.html
Issue date:        2012-04-24
CVE Names:         CVE-2012-2110 
=====================================================================

1. Summary:

Updated openssl, openssl097a, and openssl098e packages that fix one
security issue are now available for Red Hat Enterprise Linux 5 and 6.

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:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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 Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl-0.9.8e-22.el5_8.3.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl097a-0.9.7a-11.el5_8.2.src.rpm

i386:
openssl-0.9.8e-22.el5_8.3.i386.rpm
openssl-0.9.8e-22.el5_8.3.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i686.rpm
openssl-perl-0.9.8e-22.el5_8.3.i386.rpm
openssl097a-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.i386.rpm

x86_64:
openssl-0.9.8e-22.el5_8.3.i686.rpm
openssl-0.9.8e-22.el5_8.3.x86_64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.x86_64.rpm
openssl-perl-0.9.8e-22.el5_8.3.x86_64.rpm
openssl097a-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-0.9.7a-11.el5_8.2.x86_64.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/openssl-0.9.8e-22.el5_8.3.src.rpm

i386:
openssl-debuginfo-0.9.8e-22.el5_8.3.i386.rpm
openssl-devel-0.9.8e-22.el5_8.3.i386.rpm

x86_64:
openssl-debuginfo-0.9.8e-22.el5_8.3.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.x86_64.rpm
openssl-devel-0.9.8e-22.el5_8.3.i386.rpm
openssl-devel-0.9.8e-22.el5_8.3.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/openssl-0.9.8e-22.el5_8.3.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/openssl097a-0.9.7a-11.el5_8.2.src.rpm

i386:
openssl-0.9.8e-22.el5_8.3.i386.rpm
openssl-0.9.8e-22.el5_8.3.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i686.rpm
openssl-devel-0.9.8e-22.el5_8.3.i386.rpm
openssl-perl-0.9.8e-22.el5_8.3.i386.rpm
openssl097a-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.i386.rpm

ia64:
openssl-0.9.8e-22.el5_8.3.i686.rpm
openssl-0.9.8e-22.el5_8.3.ia64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.ia64.rpm
openssl-devel-0.9.8e-22.el5_8.3.ia64.rpm
openssl-perl-0.9.8e-22.el5_8.3.ia64.rpm
openssl097a-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-0.9.7a-11.el5_8.2.ia64.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.ia64.rpm

ppc:
openssl-0.9.8e-22.el5_8.3.ppc.rpm
openssl-0.9.8e-22.el5_8.3.ppc64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.ppc.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.ppc64.rpm
openssl-devel-0.9.8e-22.el5_8.3.ppc.rpm
openssl-devel-0.9.8e-22.el5_8.3.ppc64.rpm
openssl-perl-0.9.8e-22.el5_8.3.ppc.rpm
openssl097a-0.9.7a-11.el5_8.2.ppc.rpm
openssl097a-0.9.7a-11.el5_8.2.ppc64.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.ppc.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.ppc64.rpm

s390x:
openssl-0.9.8e-22.el5_8.3.s390.rpm
openssl-0.9.8e-22.el5_8.3.s390x.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.s390.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.s390x.rpm
openssl-devel-0.9.8e-22.el5_8.3.s390.rpm
openssl-devel-0.9.8e-22.el5_8.3.s390x.rpm
openssl-perl-0.9.8e-22.el5_8.3.s390x.rpm
openssl097a-0.9.7a-11.el5_8.2.s390.rpm
openssl097a-0.9.7a-11.el5_8.2.s390x.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.s390.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.s390x.rpm

x86_64:
openssl-0.9.8e-22.el5_8.3.i686.rpm
openssl-0.9.8e-22.el5_8.3.x86_64.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i386.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.i686.rpm
openssl-debuginfo-0.9.8e-22.el5_8.3.x86_64.rpm
openssl-devel-0.9.8e-22.el5_8.3.i386.rpm
openssl-devel-0.9.8e-22.el5_8.3.x86_64.rpm
openssl-perl-0.9.8e-22.el5_8.3.x86_64.rpm
openssl097a-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-0.9.7a-11.el5_8.2.x86_64.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.i386.rpm
openssl097a-debuginfo-0.9.7a-11.el5_8.2.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssl098e-0.9.8e-17.el6_2.2.src.rpm

i386:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm

x86_64:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.x86_64.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm

i386:
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl-perl-1.0.0-20.el6_2.4.i686.rpm
openssl-static-1.0.0-20.el6_2.4.i686.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-static-1.0.0-20.el6_2.4.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssl098e-0.9.8e-17.el6_2.2.src.rpm

x86_64:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.x86_64.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-static-1.0.0-20.el6_2.4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssl098e-0.9.8e-17.el6_2.2.src.rpm

i386:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm

ppc64:
openssl-1.0.0-20.el6_2.4.ppc.rpm
openssl-1.0.0-20.el6_2.4.ppc64.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.ppc.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.ppc64.rpm
openssl-devel-1.0.0-20.el6_2.4.ppc.rpm
openssl-devel-1.0.0-20.el6_2.4.ppc64.rpm
openssl098e-0.9.8e-17.el6_2.2.ppc.rpm
openssl098e-0.9.8e-17.el6_2.2.ppc64.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.ppc.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.ppc64.rpm

s390x:
openssl-1.0.0-20.el6_2.4.s390.rpm
openssl-1.0.0-20.el6_2.4.s390x.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.s390.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.s390x.rpm
openssl-devel-1.0.0-20.el6_2.4.s390.rpm
openssl-devel-1.0.0-20.el6_2.4.s390x.rpm
openssl098e-0.9.8e-17.el6_2.2.s390.rpm
openssl098e-0.9.8e-17.el6_2.2.s390x.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.s390.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.s390x.rpm

x86_64:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.x86_64.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.x86_64.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm

i386:
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-perl-1.0.0-20.el6_2.4.i686.rpm
openssl-static-1.0.0-20.el6_2.4.i686.rpm

ppc64:
openssl-debuginfo-1.0.0-20.el6_2.4.ppc64.rpm
openssl-perl-1.0.0-20.el6_2.4.ppc64.rpm
openssl-static-1.0.0-20.el6_2.4.ppc64.rpm

s390x:
openssl-debuginfo-1.0.0-20.el6_2.4.s390x.rpm
openssl-perl-1.0.0-20.el6_2.4.s390x.rpm
openssl-static-1.0.0-20.el6_2.4.s390x.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-static-1.0.0-20.el6_2.4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssl098e-0.9.8e-17.el6_2.2.src.rpm

i386:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm

x86_64:
openssl-1.0.0-20.el6_2.4.i686.rpm
openssl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl-devel-1.0.0-20.el6_2.4.i686.rpm
openssl-devel-1.0.0-20.el6_2.4.x86_64.rpm
openssl098e-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-0.9.8e-17.el6_2.2.x86_64.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.i686.rpm
openssl098e-debuginfo-0.9.8e-17.el6_2.2.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/openssl-1.0.0-20.el6_2.4.src.rpm

i386:
openssl-debuginfo-1.0.0-20.el6_2.4.i686.rpm
openssl-perl-1.0.0-20.el6_2.4.i686.rpm
openssl-static-1.0.0-20.el6_2.4.i686.rpm

x86_64:
openssl-debuginfo-1.0.0-20.el6_2.4.x86_64.rpm
openssl-perl-1.0.0-20.el6_2.4.x86_64.rpm
openssl-static-1.0.0-20.el6_2.4.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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