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Computer vulnerabilities of PulseSecure MAG Series

computer vulnerability announce CVE-2015-5369

Pulse Secure Connect Secure: Man-in-the-Middle of Hardware Acceleration

Synthesis of the vulnerability

An attacker can perform a Man-in-the-Middle when the Hardware Acceleration is enabled on Pulse Secure Connect Secure, in order to read or alter TLS session data.
Impacted products: IVE OS, MAG Series by Juniper, Juniper SA, Pulse Connect Secure, MAG Series by Pulse Secure.
Severity: 2/4.
Consequences: data reading, data creation/edition.
Provenance: internet server.
Creation date: 31/07/2015.
Identifiers: CVE-2015-5369, SA40004, TSB16756, VIGILANCE-VUL-17547.

Description of the vulnerability

The Hardware Acceleration can be enabled on Pulse Secure Connect Secure.

However, in this case, it does not correctly compute the MAC of the TLS Handshake Finished Message. Using a second vulnerability, an attacker can thus perform a Man-in-the-Middle.

An attacker can therefore perform a Man-in-the-Middle when the Hardware Acceleration is enabled on Pulse Secure Connect Secure, in order to read or alter TLS session data.
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