PT-2024-22590 · Unknown+1 · Openvpn-Auth-Ldap+1

Grissess · Published 2024-06-27 · Updated 2024-11-04 · CVE-2024-28820

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions openvpn-auth-ldap version 2.0.4

Description The issue is a buffer overflow in the extract openvpn cr function in openvpn-cr.c that allows attackers with a valid LDAP username and control over the challenge/response password field to cause a buffer overflow by passing a string with more than 14 colons into this field.

Recommendations For openvpn-auth-ldap version 2.0.4, as a temporary workaround, consider restricting the input to the challenge/response password field to prevent strings with more than 14 colons from being passed. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2024-28820

Affected Products

Debian

Openvpn-Auth-Ldap

References · 15

• https://security-tracker.debian.org/tracker/CVE-2024-28820 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-28820 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-28820 · Security Note
• https://ubuntu.com/security/CVE-2024-28820 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-28820 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-28820 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2024-28820 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-28820 · Vendor Advisory
• https://github.com/threerings/openvpn-auth-ldap/tags · Note
• https://github.com/threerings/openvpn-auth-ldap/pull/92 · Note
• https://t.me/cvenotify/84720 · Telegram Post
• https://t.me/cvenotify/84686 · Telegram Post
• https://t.me/cvenotify/99542 · Telegram Post
• https://security.alpinelinux.org/vuln/CVE-2024-28820 · Note
• https://twitter.com/CVEnew/status/1806361245672526134 · Twitter Post