PT-2017-17785 · Openvpn+3 · Openvpn+3

Guido Vranken · Published 2017-06-21 · Updated 2024-06-15 · CVE-2017-7521

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenVPN versions prior to 2.4.3 OpenVPN versions prior to 2.3.17

Description The issue is related to remote denial-of-service due to memory exhaustion. This is caused by memory leaks and a double-free issue in the extract x509 extension() function.

Recommendations For versions prior to 2.4.3, update to version 2.4.3 or later. For versions prior to 2.3.17, update to version 2.3.17 or later.

Fix

DoS

Missing Release of Resource after Effective Lifetime

Double Free

Resource Exhaustion

Weakness Enumeration

CWE-772

CWE-415

CWE-400

Related Identifiers

ALT-PU-2017-1766

CVE-2017-7521

DSA-3900-1

MGASA-2017-0224

OPENSUSE-SU-2017_1680-1

OPENSUSE-SU-2024:11128-1

SUSE-SU-2017:1635-1

SUSE-SU-2017:1718-1

USN-3339-1

Affected Products

Alt Linux

Openvpn

Suse

Ubuntu

References · 66

• http://debian.org/security/2017/dsa-3900 · Vendor Advisory
• https://bdu.fstec.ru/vul/2018-00021 · Security Note
• https://ubuntu.com/security/notices/USN-3339-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-7521 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7521 · Security Note
• https://cve.org/CVERecord?id=CVE-2017-7521 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2017:1718-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/openvpn · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7520 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7522 · Security Note
• https://osv.dev/vulnerability/USN-3339-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7508 · Security Note
• https://security-tracker.debian.org/tracker/DSA-3900-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-7521 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0224 · Vendor Advisory