low
2.6
CWE
310
Advisory Published
CVE Published
Updated

CVE-2013-0169

First published: Mon Feb 04 2013(Updated: )

A flaw in how TLS/DTLS, when CBC-mode encryption is used, communicates was reported. This vulnerability can allow for a Man-in-the-Middle attacker to recover plaintext from a TLS/DTLS connection, when CBC-mode encryption is used. This flaw is in the TLS specification, and not a bug in a specific implementation (as such, it affects nearly all implementations). As such, it affects all TLS and DTLS implementations that are compliant with TLS 1.1 or 1.2, or with DTLS 1.0 or 1.2. It also applies to implementations of SSL 3.0 and TLS 1.0 that incorporate countermeasures to deal with previous padding oracle attacks. All TLS/DTLS ciphersuites that include CBC-mode encryption are potentially vulnerable. The paper indicates that with OpenSSL, a full plaintext recovery attack is possible, and with GnuTLS, a partial plaintext recovery is possible (recovering up to 4 bits of the last byte in any block of plaintext). To perform a successful attack, when TLS is used, a large number of TLS sessions are required (target plaintext must be sent repeatedly in the same position in the plaintext stream across the sessions). For DTLS, a successful attack can be carried out in a single session. The attacker must also be located close to the machine being attacked. Further details are noted in the paper. Current status of fixes in various implementations: * OpenSSL has a patch in development * NSS has a patch in development * GnuTLS is fixed in versions 2.12.23, 3.0.28, and 3.1.7 * PolarSSL is fixed in version 1.2.5 * BouncyCastle has a patch that will be included in the forthcoming 1.48 version Full paper: <a href="http://www.isg.rhul.ac.uk/tls/TLStiming.pdf">http://www.isg.rhul.ac.uk/tls/TLStiming.pdf</a> External References: <a href="http://www.isg.rhul.ac.uk/tls/">http://www.isg.rhul.ac.uk/tls/</a> <a href="http://www.openssl.org/news/secadv_20130205.txt">http://www.openssl.org/news/secadv_20130205.txt</a> <a href="https://polarssl.org/tech-updates/releases/polarssl-1.2.5-released">https://polarssl.org/tech-updates/releases/polarssl-1.2.5-released</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/java<1.6.0-openjdk-1:1.6.0.0-1.35.1.11.8.el5_9
1.6.0-openjdk-1:1.6.0.0-1.35.1.11.8.el5_9
redhat/java<1.7.0-openjdk-1:1.7.0.9-2.3.7.1.el5_9
1.7.0-openjdk-1:1.7.0.9-2.3.7.1.el5_9
redhat/openssl<0:0.9.8e-26.el5_9.1
0:0.9.8e-26.el5_9.1
redhat/java<1.6.0-openjdk-1:1.6.0.0-1.56.1.11.8.el6_3
1.6.0-openjdk-1:1.6.0.0-1.56.1.11.8.el6_3
redhat/java<1.7.0-openjdk-1:1.7.0.9-2.3.7.1.el6_3
1.7.0-openjdk-1:1.7.0.9-2.3.7.1.el6_3
redhat/openssl<0:1.0.0-27.el6_4.2
0:1.0.0-27.el6_4.2
redhat/java<1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el6_4
1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el6_4
redhat/rhev-hypervisor6<0:6.4-20130306.2.el6_4
0:6.4-20130306.2.el6_4
redhat/java<1.6.0-sun-1:1.6.0.41-1jpp.1.el5_9
1.6.0-sun-1:1.6.0.41-1jpp.1.el5_9
redhat/java<1.7.0-oracle-1:1.7.0.15-1jpp.1.el5_9
1.7.0-oracle-1:1.7.0.15-1jpp.1.el5_9
redhat/java<1.7.0-ibm-1:1.7.0.4.2-1jpp.1.el5_9
1.7.0-ibm-1:1.7.0.4.2-1jpp.1.el5_9
redhat/java<1.6.0-ibm-1:1.6.0.13.2-1jpp.1.el5_9
1.6.0-ibm-1:1.6.0.13.2-1jpp.1.el5_9
redhat/java<1.5.0-ibm-1:1.5.0.16.2-1jpp.1.el5_9
1.5.0-ibm-1:1.5.0.16.2-1jpp.1.el5_9
redhat/java<1.6.0-sun-1:1.6.0.41-1jpp.1.el6_3
1.6.0-sun-1:1.6.0.41-1jpp.1.el6_3
redhat/java<1.7.0-oracle-1:1.7.0.15-1jpp.1.el6_3
1.7.0-oracle-1:1.7.0.15-1jpp.1.el6_3
redhat/java<1.7.0-ibm-1:1.7.0.4.2-1jpp.1.el6_4
1.7.0-ibm-1:1.7.0.4.2-1jpp.1.el6_4
redhat/java<1.6.0-ibm-1:1.6.0.13.2-1jpp.1.el6_4
1.6.0-ibm-1:1.6.0.13.2-1jpp.1.el6_4
redhat/java<1.5.0-ibm-1:1.5.0.16.2-1jpp.1.el6_4
1.5.0-ibm-1:1.5.0.16.2-1jpp.1.el6_4
redhat/openssl<1.0.1
1.0.1
redhat/openssl<0.9.8
0.9.8
redhat/polarssl<1.2.5
1.2.5
redhat/icedtea6<1.11.8
1.11.8
redhat/icedtea6<1.12.3
1.12.3
redhat/icedtea7<2.1.6
2.1.6
redhat/icedtea7<2.2.6
2.2.6
redhat/icedtea7<2.3.7
2.3.7
OpenSSL OpenSSL>=0.9.8<=0.9.8x
OpenSSL OpenSSL>=1.0.0<=1.0.0j
OpenSSL OpenSSL>=1.0.1<=1.0.1d
Oracle OpenJDK=1.6.0
Oracle OpenJDK=1.6.0-update1
Oracle OpenJDK=1.6.0-update10
Oracle OpenJDK=1.6.0-update11
Oracle OpenJDK=1.6.0-update12
Oracle OpenJDK=1.6.0-update13
Oracle OpenJDK=1.6.0-update14
Oracle OpenJDK=1.6.0-update15
Oracle OpenJDK=1.6.0-update16
Oracle OpenJDK=1.6.0-update17
Oracle OpenJDK=1.6.0-update18
Oracle OpenJDK=1.6.0-update19
Oracle OpenJDK=1.6.0-update2
Oracle OpenJDK=1.6.0-update20
Oracle OpenJDK=1.6.0-update21
Oracle OpenJDK=1.6.0-update22
Oracle OpenJDK=1.6.0-update23
Oracle OpenJDK=1.6.0-update24
Oracle OpenJDK=1.6.0-update25
Oracle OpenJDK=1.6.0-update26
Oracle OpenJDK=1.6.0-update27
Oracle OpenJDK=1.6.0-update29
Oracle OpenJDK=1.6.0-update3
Oracle OpenJDK=1.6.0-update30
Oracle OpenJDK=1.6.0-update31
Oracle OpenJDK=1.6.0-update32
Oracle OpenJDK=1.6.0-update33
Oracle OpenJDK=1.6.0-update34
Oracle OpenJDK=1.6.0-update35
Oracle OpenJDK=1.6.0-update37
Oracle OpenJDK=1.6.0-update38
Oracle OpenJDK=1.6.0-update4
Oracle OpenJDK=1.6.0-update5
Oracle OpenJDK=1.6.0-update6
Oracle OpenJDK=1.6.0-update7
Oracle OpenJDK=1.7.0
Oracle OpenJDK=1.7.0-update1
Oracle OpenJDK=1.7.0-update10
Oracle OpenJDK=1.7.0-update11
Oracle OpenJDK=1.7.0-update13
Oracle OpenJDK=1.7.0-update2
Oracle OpenJDK=1.7.0-update3
Oracle OpenJDK=1.7.0-update4
Oracle OpenJDK=1.7.0-update5
Oracle OpenJDK=1.7.0-update6
Oracle OpenJDK=1.7.0-update7
Oracle OpenJDK=1.7.0-update9
Polarssl Polarssl=0.10.0
Polarssl Polarssl=0.10.1
Polarssl Polarssl=0.11.0
Polarssl Polarssl=0.11.1
Polarssl Polarssl=0.12.0
Polarssl Polarssl=0.12.1
Polarssl Polarssl=0.13.1
Polarssl Polarssl=0.14.0
Polarssl Polarssl=0.14.2
Polarssl Polarssl=0.14.3
Polarssl Polarssl=0.99-pre1
Polarssl Polarssl=0.99-pre3
Polarssl Polarssl=0.99-pre4
Polarssl Polarssl=0.99-pre5
Polarssl Polarssl=1.0.0
Polarssl Polarssl=1.1.0
Polarssl Polarssl=1.1.0-rc0
Polarssl Polarssl=1.1.0-rc1
Polarssl Polarssl=1.1.1
Polarssl Polarssl=1.1.2
Polarssl Polarssl=1.1.3
Polarssl Polarssl=1.1.4

Remedy

On OpenShift Container Platform 3.11 it's possible to edit the list of cipher suites offered by the router when performing 'edge', or 're-encrypt' TLS modes. Please follow the documentation [1], and [2] to remove the vulnerable CBC ciphers use the modern, or intermediate cipher suites outlined by Mozilla instead [3]. In 'passthrough' mode TLS termination occurs in the application so that is another way to mitigate the vulnerability. [1] https://docs.openshift.com/container-platform/3.11/install_config/router/customized_haproxy_router.html#obtaining-router-configuration-template [2] https://docs.openshift.com/container-platform/3.11/install_config/router/customized_haproxy_router.html#using-configmap-replace-template [3] https://wiki.mozilla.org/Security/Server_Side_TLS

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