VDB-151360 · CVE-2019-12278 · GCVE-0-2019-12278

Opera Web Browser up to 53 on Android Address Bar Unicode Character input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$5k-$25k	0.00

Summaryinfo

A vulnerability was found in Opera Web Browser up to 53 on Android. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Address Bar. Executing a manipulation as part of Unicode Character can lead to input validation. This vulnerability is registered as CVE-2019-12278. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Opera Web Browser up to 53 on Android (Web Browser). It has been declared as critical. This vulnerability affects some unknown processing of the component Address Bar. The manipulation as part of a Unicode Character leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Opera through 53 on Android allows Address Bar Spoofing. Characters from several languages are displayed in Right-to-Left order, due to mishandling of several Unicode characters. The rendering mechanism, in conjunction with the "first strong character" concept, may improperly operate on a numerical IP address or an alphabetic string, leading to a spoofed URL.

The weakness was published 03/12/2020. This vulnerability was named CVE-2019-12278 since 05/22/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/13/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Web Browser

Vendor

Opera

Name

Web Browser

Version

License

free

Website

Vendor: https://www.opera.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/22/2019 🔍
03/12/2020 +295 days 🔍
03/13/2020 +1 days 🔍
05/12/2025 +1886 days 🔍

Sourcesinfo

Vendor: opera.com

Advisory: help.opera.com
Status: Not defined

CVE: CVE-2019-12278 (🔍)
GCVE (CVE): GCVE-0-2019-12278
GCVE (VulDB): GCVE-100-151360
scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 03/13/2020 13:54
Updated: 05/12/2025 13:45
Changes: 03/13/2020 13:54 (37), 03/13/2020 13:59 (18), 04/13/2024 12:36 (17), 05/12/2025 13:45 (4)
Complete: 🔍
Cache ID: 216::103