CVE-2024-53846: ssl fails to validate incorrect extened key usage

Description

OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang, and a set of design principles for Erlang programs. A regression was introduced into the ssl application of OTP starting at OTP-25.3.2.8, OTP-26.2, and OTP-27.0, resulting in a server or client verifying the peer when incorrect extended key usage is presented (i.e., a server will verify a client if they have server auth ext key usage and vice versa).

CVSS vector

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

Attack vector

Network

Complexity

High

Privileges

High

User interaction

None

Confidentiality

Low

Integrity

Low

Availability

Low

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 18% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

OT

otp · erlang

>= 25.3.2.8, <= 25.3.2.16; >= 26.2, <= 26.2.5.6; >= 27.0, <= 27.1.3 · source: vendor, CISA