Yandex Browser prior 22.5.0.862 on Windows Installation File symlink

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Yandex Browser on Windows. This vulnerability affects unknown code of the component Installation File Handler. Executing a manipulation can lead to symlink. This vulnerability is handled as CVE-2021-25261. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Yandex Browser on Windows and classified as critical. This vulnerability affects an unknown function of the component Installation File Handler. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Local privilege vulnerability in Yandex Browser for Windows prior to 22.5.0.862 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating symlinks to installation file during Yandex Browser update process.

The weakness was released 06/16/2022. The advisory is shared for download at yandex.com. This vulnerability was named CVE-2021-25261 since 01/15/2021. There are neither technical details nor an exploit publicly available.

Upgrading to version 22.5.0.862 eliminates this vulnerability.

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

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
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 22.5.0.862

Timelineinfo

01/15/2021 🔍
06/16/2022 +516 days 🔍
06/16/2022 +0 days 🔍
06/16/2022 +0 days 🔍

Sourcesinfo

Advisory: yandex.com
Status: Confirmed

CVE: CVE-2021-25261 (🔍)
GCVE (CVE): GCVE-0-2021-25261
GCVE (VulDB): GCVE-100-202216

Entryinfo

Created: 06/16/2022 09:35
Changes: 06/16/2022 09:35 (40)
Complete: 🔍
Cache ID: 216::103

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

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