7.8
HIGH
CVE-2021-25263
Yandex Browser Windows Local Privilege Escalation
Description

Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process.

INFO

Published Date :

Aug. 17, 2021, 7:15 p.m.

Last Modified :

Aug. 8, 2023, 2:22 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-25263 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Yandex yandex_browser
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-25263.

URL Resource
https://yandex.com/bugbounty/i/hall-of-fame-browser/ Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-25263 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-25263 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 08, 2023

    Action Type Old Value New Value
    Changed CWE NVD-CWE-noinfo CWE-732
  • Modified Analysis by [email protected]

    Feb. 10, 2023

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://yandex.com/bugbounty/i/hall-of-fame-browser/ No Types Assigned https://yandex.com/bugbounty/i/hall-of-fame-browser/ Vendor Advisory
    Changed CPE Configuration OR *cpe:2.3:a:yandex:clickhouse:*:*:*:*:lts:*:*:* versions up to (excluding) 20.8.18.32 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:-:*:*:* versions up to (excluding) 21.1.9.41 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:-:*:*:* versions from (including) 21.2 up to (excluding) 21.2.9.41 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:lts:*:*:* versions from (including) 21.3.2.5 up to (excluding) 21.3.6.55 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:-:*:*:* versions from (including) 21.4 up to (excluding) 21.4.3.21 OR *cpe:2.3:a:yandex:yandex_browser:*:*:*:*:*:windows:*:* versions up to (excluding) 21.9.0.390
  • CVE Modified by [email protected]

    Jun. 15, 2022

    Action Type Old Value New Value
    Changed Description Clickhouse prior to versions v20.8.18.32-lts, v21.1.9.41-stable, v21.2.9.41-stable, v21.3.6.55-lts, v21.4.3.21-stable allows user to read any file on the host system, that clickhouse user has access to. Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process.
    Removed Reference https://clickhouse.tech/docs/en/whats-new/security-changelog/ [Vendor Advisory]
    Added Reference https://yandex.com/bugbounty/i/hall-of-fame-browser/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Aug. 25, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://clickhouse.tech/docs/en/whats-new/security-changelog/ No Types Assigned https://clickhouse.tech/docs/en/whats-new/security-changelog/ Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:yandex:clickhouse:*:*:*:*:lts:*:*:* versions up to (excluding) 20.8.18.32 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:-:*:*:* versions up to (excluding) 21.1.9.41 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:-:*:*:* versions from (including) 21.2 up to (excluding) 21.2.9.41 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:lts:*:*:* versions from (including) 21.3.2.5 up to (excluding) 21.3.6.55 *cpe:2.3:a:yandex:clickhouse:*:*:*:*:-:*:*:* versions from (including) 21.4 up to (excluding) 21.4.3.21
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability