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CVE-2017-7765

7.5 · HIGH

The "Mark of the Web" was not correctly saved on Windows when files with very long names were downloaded from the Internet.

Published Jun 11, 2018CWE-20EPSS 1.36%

Overview

CVE-2017-7765 is a high-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The "Mark of the Web" was not correctly saved on Windows when files with very long names were downloaded from the Internet. Without the Mark of the Web data, the security warning that Windows displays before running executables downloaded from the Internet is not shown. Note: This attack only affects Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/99057Refwww.securitytracker.com/id/1038689Refbugzilla.mozilla.org/show_bug.cgi?id=1273265Refwww.mozilla.org/security/advisories/mfsa2017-15/Refwww.mozilla.org/security/advisories/mfsa2017-16/Refwww.mozilla.org/security/advisories/mfsa2017-17/Refwww.securityfocus.com/bid/99057Refwww.securitytracker.com/id/1038689Refbugzilla.mozilla.org/show_bug.cgi?id=1273265Refwww.mozilla.org/security/advisories/mfsa2017-15/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-7765?

CVE-2017-7765 is a high-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2017-7765?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-7765?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-7765?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-7765 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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