Fraudulent French Directorate General of the Treasury Digital Certificates Spoofing Issue
2013 December 9 20:46 GMT
2013 December 20 14:41 GMT
A fraudulently issued subordinate Certificate Authority (CA) certificate has been issued by the office of the Directorate General of the Treasury, a department of the French national government. The department is present in the Microsoft Windows Trusted Root Authorities Store. Attackers have used the fraudulently issued CA certificate to issue additional certificates for several third-party domains, including Google domains. Because the issuing CA certificate is trusted by Microsoft Windows systems, fraudulently issued certificates would also be trusted by Microsoft Windows systems.
By using the fraudulent certificates, an attacker could convince a user, web server, or other system that the attacker's identity matches that of a trusted third party. The attacker could abuse the certificate-based trust to conduct spoofing or phishing attacks in an attempt to gain information from a user. The attacker could also conduct man-in-the-middle attacks and monitor encrypted communications if a user trusts the fraudulent certificate and accesses remote servers using the certificate.
Microsoft has removed the fraudulent CA certificate from the trusted root, preventing Microsoft Windows systems from accepting the certificates as valid.
Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.
Administrators are advised to monitor affected systems.
Microsoft has re-released a security advisory at the following link: 2916652
CentOS packages can be updated using the up2date or yum command.
Mozilla has released a security bulletin at the following link: MFSA 2013-117
Mozilla has released updated versions at the following link:
Red Hat has released an official CVE statement and a security advisory for bug 1038894 at the following link: RHSA-2013:1866
Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.
Red Hat and Mozilla have released security advisories and updated packages to address the Fraudulent French Directorate General of the Treasury Digital Certificates Spoofing Issue. CentOS has also released updated packages to address this issue.
2013-December-20 14:41 GMT
Microsoft has re-released a security advisory to include additional updates to mitigate the vulnerability.
2013-December-16 13:25 GMT
Microsoft Windows systems may trust fraudulently issued certificates, possibly allowing attackers to conduct spoofing or phishing attacks.
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