libcURL up to 7.71.1 Connection use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in libcURL up to 7.71.1. It has been rated as critical. Impacted is an unknown function of the component Connection Handler. Performing a manipulation results in use after free. This vulnerability is known as CVE-2020-8231. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in libcURL up to 7.71.1 (Network Utility Software). This affects an unknown function of the component Connection Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. The impact remains unknown.

The weakness was published 12/15/2020. It is possible to read the advisory at hackerone.com. This vulnerability is uniquely identified as CVE-2020-8231. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236591 (Alibaba Cloud Linux 3 : 0078: curl (ALINUX3-SA-2021:0078)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236591). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236591
Nessus Name: Alibaba Cloud Linux 3 : 0078: curl (ALINUX3-SA-2021:0078)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/28/2020 🔍
12/15/2020 +322 days 🔍
12/15/2020 +0 days 🔍
05/20/2025 +1617 days 🔍

Sourcesinfo

Advisory: hackerone.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-8231 (🔍)
GCVE (CVE): GCVE-0-2020-8231
GCVE (VulDB): GCVE-100-166215

Entryinfo

Created: 12/15/2020 07:27
Updated: 05/20/2025 21:10
Changes: 12/15/2020 07:27 (36), 12/17/2020 13:42 (2), 05/20/2025 21:10 (16)
Complete: 🔍
Cache ID: 216::103

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

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