CVE-2017-5120

chromium-browser: potential https downgrade during redirect navigation

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Inappropriate use of www mismatch redirects in browser navigation in Google Chrome prior to 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android, allowed a remote attacker to potentially downgrade HTTPS requests to HTTP via a crafted HTML page. In other words, Chrome could transmit cleartext even though the user had entered an https URL, because of a misdesigned workaround for cases where the domain name in a URL almost matches the domain name in an X.509 server certificate (but differs in the initial "www." substring).

El uso incorrecto de redirecciones no coincidentes de www en la navegación por el explorador en Google Chrome, en versiones anteriores a la 61.0.3163.79 para Mac, Windows y Linux y a la 61.0.3163.81 para Android, permitía que un atacante remoto degradase las peticiones HTTPS a HTTP mediante una página HTML manipulada. En otras palabras, Chrome podría transmitir texto en claro incluso aunque el usuario hubiese introducido una URL https. Esto se debe a un método alternativo mal diseñado para los casos en los que el nombre de dominio en una URL casi coincide con el nombre de dominio en un certificado del servidor X.509 (pero difiere en la subcadena "www." inicial).

Chromium is an open-source web browser, powered by WebKit. This update upgrades Chromium to version 61.0.3163.79. Security Fix: Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Chromium to crash, execute arbitrary code, or disclose sensitive information when visited by the victim.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-01-02 CVE Reserved
2017-09-12 CVE Published
2024-08-05 CVE Updated
2025-04-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/100610	Vdb Entry
http://www.securitytracker.com/id/1039291	Vdb Entry
https://chromereleases.googleblog.com/2017/09/stable-channel-update-for-desktop.html	X_refsource_misc
https://crbug.com/718676	X_refsource_misc

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3985	2023-11-07
https://access.redhat.com/errata/RHSA-2017:2676	2023-11-07
https://security.gentoo.org/glsa/201709-15	2023-11-07
https://access.redhat.com/security/cve/CVE-2017-5120	2017-09-12
https://bugzilla.redhat.com/show_bug.cgi?id=1488782	2017-09-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"	Chrome Search vendor "Google" for product "Chrome"	< 61.0.3163.79 Search vendor "Google" for product "Chrome" and version " < 61.0.3163.79"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Google Search vendor "Google"	Chrome Search vendor "Google" for product "Chrome"	< 61.0.3163.79 Search vendor "Google" for product "Chrome" and version " < 61.0.3163.79"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Google Search vendor "Google"	Chrome Search vendor "Google" for product "Chrome"	< 61.0.3163.79 Search vendor "Google" for product "Chrome" and version " < 61.0.3163.79"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe
Google Search vendor "Google"	Chrome Search vendor "Google" for product "Chrome"	< 61.0.3163.81 Search vendor "Google" for product "Chrome" and version " < 61.0.3163.81"	-	Affected	in	Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	-	-	Safe
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected