libuv up to 10.22.0/12.18.3/14.8.x realpath buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in libuv up to 10.22.0/12.18.3/14.8.x and classified as critical. Affected by this vulnerability is the function realpath. The manipulation leads to buffer overflow. This vulnerability is known as CVE-2020-8252. There is no exploit available. It is recommended to upgrade the affected component. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability, which was classified as critical, was found in libuv up to 10.22.0/12.18.3/14.8.x. Affected is the function realpath. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.

The weakness was shared 09/18/2020 (Website). The advisory is available at hackerone.com. This vulnerability is traded as CVE-2020-8252 since 01/28/2020. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236671 (Alibaba Cloud Linux 3 : 0099: libuv (ALINUX3-SA-2022:0099)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.22.1, 12.18.4 or 14.9.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236671). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

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

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236671
Nessus Name: Alibaba Cloud Linux 3 : 0099: libuv (ALINUX3-SA-2022:0099)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libuv 10.22.1/12.18.4/14.9.0

Timelineinfo

01/28/2020 🔍
09/18/2020 +234 days 🔍
09/19/2020 +1 days 🔍
05/18/2025 +1702 days 🔍

Sourcesinfo

Advisory: hackerone.com
Status: Confirmed

CVE: CVE-2020-8252 (🔍)
GCVE (CVE): GCVE-0-2020-8252
GCVE (VulDB): GCVE-100-161634

Entryinfo

Created: 09/19/2020 02:41 PM
Updated: 05/18/2025 05:59 PM
Changes: 09/19/2020 02:41 PM (37), 09/19/2020 02:46 PM (3), 05/18/2025 05:59 PM (19)
Complete: 🔍
Cache ID: 18:1C1:40

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