CVE-2024-28820: Out-of-bounds Read (CVSS 6.3)

Description

Buffer overflow in the extract_openvpn_cr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow.

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CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

References

Other References

https://github.com/threerings/openvpn-auth-ldap/pull/92 https://github.com/threerings/openvpn-auth-ldap/tags https://github.com/threerings/openvpn-auth-ldap/pull/92 https://github.com/threerings/openvpn-auth-ldap/tags

Frequently Asked Questions

What is CVE-2024-28820? +

Buffer overflow in the extract_openvpn_cr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2024-28820? +

CVE-2024-28820 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-28820? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-28820