high
7.5
CWE
416
Advisory Published
CVE Published
Updated

CVE-2023-28319: Use After Free

First published: Wed May 10 2023(Updated: )

A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.

Credit: CVE-2023-28319 CVE-2023-28320 CVE-2023-28321 CVE-2023-28322 support@hackerone.com

Affected SoftwareAffected VersionHow to fix
redhat/curl<8.1.0
8.1.0
Apple macOS<11.7.9
11.7.9
IBM Engineering Requirements Management DOORS Web Access<=9.7.2.7
IBM Rational DOORS Web Access<=9.7.2.7
curl<8.1.0
macOS<12.6.8
12.6.8
macOS Ventura<13.5
13.5
Curl<8.1.0
macOS>=11.0<11.7.9
macOS>=12.0<12.6.8
macOS>=13.0<13.5
IBM Data ONTAP
NetApp Clustered Data ONTAP Antivirus Connector
All of
NetApp H300S Firmware
NetApp H300S Firmware
All of
NetApp H500e Firmware
NetApp H500e Firmware
All of
NetApp H700S
NetApp H700S
All of
NetApp H410S
NetApp H410S Firmware
NetApp H300S Firmware
NetApp H300S Firmware
NetApp H500e Firmware
NetApp H500e Firmware
NetApp H700S
NetApp H700S
NetApp H410S
NetApp H410S Firmware

Remedy

https://hackerone.com/reports/1913733

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID of this issue?

    The vulnerability ID of this issue is CVE-2023-28319.

  • What is the severity of CVE-2023-28319?

    The severity of CVE-2023-28319 is high.

  • Which software is affected by CVE-2023-28319?

    The software affected by CVE-2023-28319 includes Haxx Curl, Apple macOS (version 11.0 to 11.7.9), Apple macOS (version 12.0 to 12.6.8), Apple macOS (version 13.0 to 13.5), Apple macOS Big Sur, Apple macOS Monterey.

  • How does CVE-2023-28319 affect libcurl?

    CVE-2023-28319 is a use after free vulnerability in libcurl that occurs when verifying an SSH server's public key using a SHA 256 hash.

  • Where can I find more information about CVE-2023-28319?

    You can find more information about CVE-2023-28319 at the following references: [HackerOne report](https://hackerone.com/reports/1913733), [Seclist 1](http://seclists.org/fulldisclosure/2023/Jul/47), [Seclist 2](http://seclists.org/fulldisclosure/2023/Jul/48).

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203