CVE-2012-6153
Description
It was found that the fix for CVE-2012-5783 was incomplete: the code added to check that the server host name matches the domain name in a subject's Common Name (CN) field in X.509 certificates was flawed. A man-in-the-middle attacker could use this flaw to spoof an SSL server using a specially crafted X.509 certificate.
Statement
Additional information can be found in the Red Hat Knowledgebase article: https://access.redhat.com/solutions/1165533
This issue affects the versions of HttpComponents Client and ModeShape Client as shipped with Red Hat JBoss Data Virtualization 6. However, this flaw is not known to be exploitable under any supported scenario in Red Hat JBoss Data Virtualization 6. A future update may address this issue.
This issue did not affect the jakarta-commons-httpclient packages as shipped with Red Hat Enterprise Linux 5, 6, and 7, and httpcomponents-client packages as shipped with Red Hat Enterprise Linux 7.
Red Hat JBoss Enterprise Application Platform 4, Red Hat JBoss SOA Platform 4, and Red Hat JBoss Web Server 1 are now in Phase 3, Extended Life Support, of their respective life cycles. This issue has been rated as having Important security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat JBoss Middleware and Red Hat JBoss Operations Network Product Update and Support Policy: https://access.redhat.com/support/policy/updates/jboss_notes/
Fuse ESB 4, Fuse Message Broker 5.2, 5.3, 5.4 and Fuse Services Framework 2.3, 2.4 are now in a reduced support phase receiving only Critical impact security fixes. This issue has been rated as having Important security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Fuse Product Life Cycle: https://access.redhat.com/support/policy/updates/fusesource/
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.8 | 4.3 | N/A |
| Attack Vector | Network | Network | N/A |
| Access Complexity | Medium | Medium | N/A |
| Authentication | None | None | N/A |
| Confidentiality Impact | Partial | None | N/A |
| Integrity Impact | Partial | Partial | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: AV:N/AC:M/Au:N/C:P/I:P/A:N
NVD: AV:N/AC:M/Au:N/C:N/I:P/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Gain Privileges or Assume Identity
The data read from the system vouched for by the certificate may not be from the expected system.
Authentication,Other
Technical Impact: Other
Trust afforded to the system in question - based on the malicious certificate - may allow for spoofing or redirection attacks.
Access Control,Other
Technical Impact: Gain Privileges or Assume Identity; Other
If the certificate's host-specific data is not properly checked - such as the Common Name (CN) in the Subject or the Subject Alternative Name (SAN) extension of an X.509 certificate - it may be possible for a redirection or spoofing attack to allow a malicious host with a valid certificate to provide data, impersonating a trusted host.
Acknowledgements
This issue was discovered by Florian Weimer (Red Hat Product Security).
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