libosmo-sigtran through 2.2.1 contains an out-of-bounds read in the M3UA NOTIFY decoder in src/m3ua.c.

Summary

libosmo-sigtran through 2.2.1 contains an out-of-bounds read in the M3UA NOTIFY decoder in src/m3ua.c. This allows a remote attacker to obtain sensitive information.

Remediation

1. Inventory every Unknown product deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://github.com/osmocom/libosmo-sigtran/commit/b554131f2cbb20ca9a9cf51ca17d73f644eff1f8
• Referencehttps://osmocom.org/issues/7056