CVE-2016-2385

critical

Published 2016-04-11 · Modified 2026-05-06

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CVSS v3

9.8

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

10.0

Description

Heap-based buffer overflow in the encode_msg function in encode_msg.c in the SEAS module in Kamailio (formerly OpenSER and SER) before 4.3.5 allows remote attackers to cause a denial of service (memory corruption and process crash) or possibly execute arbitrary code via a large SIP packet.

Predictions

Exploit likelihood

100%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-39638 dos linux

Stelios Tsampas · 2016-03-30

Kamailio 4.3.4 - Heap Buffer Overflow

Source code queued for fetch — refresh in a moment.

OS impact

Debian Mixed 6 releases

Version	Status	Fixed in
trixie	Fixed	`4.3.4-2`
sid	Fixed	`4.3.4-2`
forky	Fixed	`4.3.4-2`
bullseye	Fixed	`4.3.4-2`
bookworm	Fixed	`4.3.4-2`
8.0	Affected	—

Application impact

Vendor	Product	Versions	Fixed
kamailio	kamailio	`{"endIncluding":"4.3.4"}`

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.