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Install Norton Security for Mac does not verify SSL certificates

Vulnerability Note VU#681983

Original Release Date: 2017-11-21 | Last Revised: 2017-11-21


Install Norton Security for Mac, prior to version 7.6, does not validate SSL certificates.


CWE-295: Improper Certificate Validation - CVE-2017-15528

The Install Norton Security for Mac installer, versions prior to 7.6, fails to properly validate SSL certificates provided by HTTPS connections, which can allow an attacker to obtain a Man-in-the-Middle position.


An attacker with a Man-in-the-Middle position can spoof content retrieved using HTTPS.


Use Updated Installer

Symantec has released an updated installer, version 7.6, to address the vulnerability. Please see more information at Symantec's advisory.

Vendor Information


Symantec Unknown

Notified:  October 09, 2017 Updated: October 09, 2017



Vendor Statement

We have not received a statement from the vendor.

Vendor References

    CVSS Metrics

    Group Score Vector
    Base 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P
    Temporal 5.1 E:ND/RL:ND/RC:ND
    Environmental 1.3 CDP:ND/TD:L/CR:ND/IR:ND/AR:ND



    Thanks to David for reporting this vulnerability.

    This document was written by Trent Novelly.

    Other Information

    CVE IDs: CVE-2017-15528
    Date Public: 2017-11-21
    Date First Published: 2017-11-21
    Date Last Updated: 2017-11-21 21:21 UTC
    Document Revision: 10

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