A vulnerability, which was classified as critical, was found in Microsoft Tech Companion 1.0.6. This affects an unknown code block of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a cryptographic issues vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Microsoft Tech Companion (aka com.technet) application 1.0.6 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The weakness was presented 09/09/2014 as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is uniquely identified as CVE-2014-5711 since 08/30/2014. Access to the local network is required for this attack. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-71433, VDB-71432, VDB-71431 and VDB-71430 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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• Microsoft

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• Tech Companion

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• 1.0.6

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• commercial

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