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CVE-2019-9803

UNKNOWN
Published 2019-04-26T16:13:22
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No CVSS data available

Description

The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Security Policy (CSP), navigation to a same-origin URL must be upgraded to HTTPS. Firefox will incorrectly navigate to an HTTP URL rather than perform the security upgrade requested by the CSP in some circumstances, allowing for potential man-in-the-middle attacks on the linked resources. This vulnerability affects Firefox < 66.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Mozilla

Firefox

Affected Versions:

unspecified

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-6h7p-w66v-f7vw

Advisory Details

The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Security Policy (CSP), navigation to a same-origin URL must be upgraded to HTTPS. Firefox will incorrectly navigate to an HTTP URL rather than perform the security upgrade requested by the CSP in some circumstances, allowing for potential man-in-the-middle attacks on the linked resources. This vulnerability affects Firefox < 66.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2019-9803
WEB https://bugzilla.mozilla.org/show_bug.cgi?id=1437009
WEB https://bugzilla.mozilla.org/show_bug.cgi?id=1515863
WEB https://w3c.github.io/webappsec-upgrade-insecure-requests
WEB https://www.mozilla.org/security/advisories/mfsa2019-07

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: April 4, 2024

References

https://www.mozilla.org/security/advisories/mfsa2019-07/
https://bugzilla.mozilla.org/show_bug.cgi?id=1515863
https://bugzilla.mozilla.org/show_bug.cgi?id=1437009
https://w3c.github.io/webappsec-upgrade-insecure-requests/
Published: 2019-04-26T16:13:22
Last Modified: 2024-08-04T22:01:54.714Z
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