Yandex Browser up to 16.8 Address Bar 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.
6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Yandex Browser up to 16.8. It has been classified as critical. This affects an unknown part of the component Address Bar Handler. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2017-7325. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Yandex Browser up to 16.8. This affects an unknown code block of the component Address Bar Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

Yandex Browser before 16.9.0 allows remote attackers to spoof the address bar via window.open.

The bug was discovered 01/18/2017. The weakness was disclosed 01/19/2018 (Website). The advisory is shared at browser.yandex.com. This vulnerability is uniquely identified as CVE-2017-7325 since 03/30/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 366 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 16.9.0 eliminates this vulnerability.

The entry VDB-112258 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Browser 16.9.0

Timelineinfo

01/18/2017 🔍
03/30/2017 +71 days 🔍
01/19/2018 +295 days 🔍
01/19/2018 +0 days 🔍
01/20/2018 +1 days 🔍
12/25/2019 +704 days 🔍

Sourcesinfo

Advisory: browser.yandex.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7325 (🔍)
GCVE (CVE): GCVE-0-2017-7325
GCVE (VulDB): GCVE-100-112257
See also: 🔍

Entryinfo

Created: 01/20/2018 13:32
Updated: 12/25/2019 13:34
Changes: 01/20/2018 13:32 (59), 12/25/2019 13:34 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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