CVE-2017-7820
published 2018-06-11CVE-2017-7820: The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide…
PriorityP424medium5.3CVSS 3.0
AVNACLPRNUINSUCNILAN
EPSS
1.19%
64.1th percentile
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 56.0-1 (sid) | firefox 56.0-1 (sid) |
| mozilla | firefox | <= 55.0.3 | — |
| mozilla | firefox | >= 0 < 56.0+build6-0ubuntu0.14.04.1 | 56.0+build6-0ubuntu0.14.04.1 |
| mozilla | firefox | >= 0 < 56.0+build6-0ubuntu0.14.04.2 | 56.0+build6-0ubuntu0.14.04.2 |
| mozilla | firefox | >= 0 < 56.0+build6-0ubuntu0.16.04.1 | 56.0+build6-0ubuntu0.16.04.1 |
| mozilla | firefox | >= 0 < 56.0+build6-0ubuntu0.16.04.2 | 56.0+build6-0ubuntu0.16.04.2 |
| mozilla | firefox | >= 0 < 56.0+build6-0ubuntu1 | 56.0+build6-0ubuntu1 |
| mozilla | firefox | >= unspecified < 56 | 56 |
CVSS provenance
nvdv3.05.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
osv9.8CRITICAL
vendor_ubuntu9.8CRITICAL
vendor_debian5.3MEDIUM
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Ubuntu
Firefox regression
vendor_ubuntu·2017-10-04·CVSS 9.8
[CRITICAL] Firefox regression
Title: Firefox regression
Summary: USN-3435-1 caused a regression in Firefox.
USN-3435-1 fixed vulnerabilities in Firefox. The update caused the Flash
plugin to crash in some circumstances. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to read uninitialized memory, obtain sensitive
information, bypass phishing and malware protection, spoof the origin in
modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial
of service via application crash, or execute arbitrary code.
(CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,
CVE-2017-7813, CVE-2017-7814, CV
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2017-10-02·CVSS 9.8
CVE-2017-7793 [CRITICAL] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to read uninitialized memory, obtain sensitive
information, bypass phishing and malware protection, spoof the origin in
modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial
of service via application crash, or execute arbitrary code.
(CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,
CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819,
CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824)
Martin Thomson discovered that NSS incorrectly g
Debian
CVE-2017-7820: firefox - The "instanceof" operator can bypass the Xray wrapper mechanism. When called on ...
vendor_debian·2017·CVSS 5.3
CVE-2017-7820 [MEDIUM] CVE-2017-7820: firefox - The "instanceof" operator can bypass the Xray wrapper mechanism. When called on ...
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
Scope: local
sid: resolved (fixed in 56.0-1)
GHSA
GHSA-hq9m-2fcc-v974: The "instanceof" operator can bypass the Xray wrapper mechanism
ghsa_unreviewed·2022-05-13
CVE-2017-7820 [MEDIUM] GHSA-hq9m-2fcc-v974: The "instanceof" operator can bypass the Xray wrapper mechanism
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
OSV
firefox regression
osv·2017-10-04·CVSS 9.8
[CRITICAL] firefox regression
firefox regression
USN-3435-1 fixed vulnerabilities in Firefox. The update caused the Flash
plugin to crash in some circumstances. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to read uninitialized memory, obtain sensitive
information, bypass phishing and malware protection, spoof the origin in
modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial
of service via application crash, or execute arbitrary code.
(CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,
CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819,
CVE-2017-7820, CV
OSV
CVE-2017-7820: The "instanceof" operator can bypass the Xray wrapper mechanism
osv·2017-10-02·CVSS 5.3
CVE-2017-7820 [MEDIUM] CVE-2017-7820: The "instanceof" operator can bypass the Xray wrapper mechanism
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
OSV
firefox vulnerabilities
osv·2017-10-02·CVSS 9.8
CVE-2017-7793 [CRITICAL] firefox vulnerabilities
firefox vulnerabilities
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to read uninitialized memory, obtain sensitive
information, bypass phishing and malware protection, spoof the origin in
modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial
of service via application crash, or execute arbitrary code.
(CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,
CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819,
CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824)
Martin Thomson discovered that NSS incorrectly generated handshake hashes.
A remote attacker could potentially exploit this to cause a denial of
service via app
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.securityfocus.com/bid/101057http://www.securitytracker.com/id/1039465https://bugzilla.mozilla.org/show_bug.cgi?id=1378207https://www.mozilla.org/security/advisories/mfsa2017-21/http://www.securityfocus.com/bid/101057http://www.securitytracker.com/id/1039465https://bugzilla.mozilla.org/show_bug.cgi?id=1378207https://www.mozilla.org/security/advisories/mfsa2017-21/
2018-06-11
Published