cURL up to 8.4.0 HSTS File Name lib/fopen.c missing encryption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in cURL up to 8.4.0 and classified as problematic. The impacted element is an unknown function in the library lib/fopen.c of the component HSTS File Name Handler. Performing a manipulation results in missing encryption. This vulnerability is cataloged as CVE-2023-46219. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in cURL up to 8.4.0 (Network Utility Software). This affects an unknown part in the library lib/fopen.c of the component HSTS File Name Handler. The manipulation with an unknown input leads to a missing encryption vulnerability. CWE is classifying the issue as CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. This is going to have an impact on confidentiality. The summary by CVE is:

When saving HSTS data to an excessively long file name, curl could end up removing all contents, making subsequent requests using that file unaware of the HSTS status they should otherwise use.

The weakness was shared 12/06/2023. The advisory is shared at curl.se. This vulnerability is uniquely identified as CVE-2023-46219. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 215804 (Azure Linux 3.0 Security Update: cmake / curl (CVE-2023-46219)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.5.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (215804). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Missing encryption
CWE: CWE-311 / CWE-310
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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Nessus ID: 215804
Nessus Name: Azure Linux 3.0 Security Update: cmake / curl (CVE-2023-46219)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cURL 8.5.0
Patch: github.com

Timelineinfo

10/19/2023 🔍
12/06/2023 +48 days 🔍
12/06/2023 +0 days 🔍
12/02/2025 +727 days 🔍

Sourcesinfo

Product: github.com

Advisory: FEDORA-2023-2121eca964
Status: Confirmed

CVE: CVE-2023-46219 (🔍)
GCVE (CVE): GCVE-0-2023-46219
GCVE (VulDB): GCVE-100-247089

Entryinfo

Created: 12/06/2023 17:55
Updated: 12/02/2025 22:15
Changes: 12/06/2023 17:55 (41), 12/30/2023 09:42 (3), 12/30/2023 09:43 (11), 02/12/2025 02:39 (17), 12/02/2025 22:15 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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