Incorrect Implementation of Authentication Algorithm Affecting erlang-sasl package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-RHEL10-ERLANGSASL-17377962
  • published19 Jun 2026
  • disclosed10 Jun 2026

Introduced: 10 Jun 2026

NewCVE-2026-48860  (opens in a new tab)
CWE-303  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 erlang-sasl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream erlang-sasl package and not the erlang-sasl package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.

The inet_tls_dist:check_ip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead of inet:peername/1 to obtain the peer's IP address. Because inet:sockname/1 returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including rpc:call/4 and code:load_binary/3.

This vulnerability is associated with program file lib/ssl/src/inet_tls_dist.erl.

This issue affects OTP from OTP 26.0 before 29.0.2, 28.5.0.2 and 27.3.4.13 corresponding to ssl from 11.0 before 11.7.2, 11.6.0.2 and 11.2.12.9.

CVSS Base Scores

version 3.1