The m_sasl module in InspIRCd before 2.0.23, when used with a service that supports SASL_EXTERNAL authentication, allows remote attackers to spoof certificate fingerprints and consequently log in as another user via a crafted SASL message.
http://www.openwall.com/lists/oss-security/2016/09/05/8
http://www.debian.org/security/2016/dsa-3662
https://github.com/inspircd/inspircd/commit/74fafb7f11b06747f69f182ad5e3769b665eea7a
http://www.openwall.com/lists/oss-security/2016/09/04/3
http://www.inspircd.org/2016/09/03/v2023-released.html
Source: Mitre, NVD
Published: 2016-09-26
Updated: 2025-04-12
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.00227