PT-2017-4021 · Mozilla+2 · Firefox+2

Kestrel · Published 2017-07-13 · Updated 2024-12-12 · CVE-2017-7816

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 56

Description The issue is related to the WebExtensions module in Mozilla Firefox, which has an insufficient input validation mechanism. This allows an attacker to potentially gain unauthorized access to protected information by exploiting the vulnerability. The vulnerability could be used to load a privileged "about:" URL in the extension UI, bypassing security checks.

Recommendations For versions prior to 56, update to a version that contains a fix for this issue to prevent exploitation. As a temporary workaround, consider restricting the use of WebExtensions that could potentially load privileged URLs in the extension UI.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2017-2437

ALT-PU-2018-1854

BDU:2021-00180

CVE-2017-7816

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

USN-3435-1

USN-3435-2

Affected Products

Alt Linux

Firefox

Ubuntu

References · 1896

• 🔥 https://bugzilla.mozilla.org/show_bug.cgi?id=1380597 · Exploit
• https://mozilla.org/en-US/security/advisories/mfsa2017-21 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:14572-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7814 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7818 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2017-21 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7793 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7822 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7815 · Vendor Advisory
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=1212483 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7816 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7820 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00180 · Security Note
• https://ubuntu.com/security/notices/USN-3435-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-7816 · Security Note