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Pulse Secure Pulse Connect Secure: Security Vulnerability in Pulse Connect Secue (PCS) RADIUS authentication mechanism (JSA10379)

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Pulse Secure Pulse Connect Secure: Security Vulnerability in Pulse Connect Secue (PCS) RADIUS authentication mechanism (JSA10379)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
08/01/2015
Created
10/28/2020
Added
10/28/2020
Modified
10/28/2020

Description

If RADIUSis being used as the authentication mechanism on PCS running an affected release of the OS, then in a specific scenario, an unauthenticated user may be able to get past the authentication step of the PCS login process. This issue was due to a bug in the software which resulted in a RADIUS Access-Request packet being sent to the backend RADIUS server with some fields containing the same values as the previous Access-Request packet which may have caused the RADIUS server to believe that this Access-Request is a duplicate packet. Depending on how the backend RADIUS server is configured to handle this duplicate Access-Request packet the authentication step may or may not succeed on PCS  i.e. only if the backend RADIUS server responds with an Access-Accept packet without validating the credentials will authentication succeed. However if the RADIUS server validates the credentials presented in the (duplicate) Access-Request packet then this vulnerability does not pose any security risk.

Solution(s)

  • pulse-secure-pulse-connect-secure-upgrade-6_0r3_2
  • pulse-secure-pulse-connect-secure-upgrade-6_0r4_3
  • pulse-secure-pulse-connect-secure-upgrade-6_0r5
  • pulse-secure-pulse-connect-secure-upgrade-6_1r2_1

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