Microsoft Visual Studio 2019 16.11/2022 17.0 Brotli buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Visual Studio 2019 16.11/2022 17.0. Affected by this vulnerability is an unknown functionality of the component Brotli. This manipulation causes buffer overflow. The identification of this vulnerability is CVE-2020-8927. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Microsoft Visual Studio 2019 16.11/2022 17.0 (Programming Tool Software) and classified as critical. Affected by this vulnerability is an unknown code of the component Brotli. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 03/08/2022 as confirmed security guidance (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is known as CVE-2020-8927. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236717 (Alibaba Cloud Linux 3 : 0118: brotli (ALINUX3-SA-2022:0118)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236717). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.0

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.5
Vendor Vector (Microsoft): 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Google LLC): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236717
Nessus Name: Alibaba Cloud Linux 3 : 0118: brotli (ALINUX3-SA-2022:0118)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: github.com

Timelineinfo

02/12/2020 🔍
03/08/2022 +755 days 🔍
03/08/2022 +0 days 🔍
03/08/2022 +0 days 🔍
05/16/2025 +1165 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: USN-4568-1
Status: Confirmed

CVE: CVE-2020-8927 (🔍)
GCVE (CVE): GCVE-0-2020-8927
GCVE (VulDB): GCVE-100-194359

Entryinfo

Created: 03/08/2022 21:42
Updated: 05/16/2025 18:03
Changes: 03/08/2022 21:42 (33), 03/08/2022 21:46 (22), 03/11/2022 09:05 (4), 03/11/2022 09:08 (27), 05/16/2025 18:03 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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