CVE-2017-17090

high

Published 2017-12-02 · Modified 2026-05-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

7.5

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.5

Description

An issue was discovered in chan_skinny.c in Asterisk Open Source 13.18.2 and older, 14.7.2 and older, and 15.1.2 and older, and Certified Asterisk 13.13-cert7 and older. If the chan_skinny (aka SCCP protocol) channel driver is flooded with certain requests, it can cause the asterisk process to use excessive amounts of virtual memory, eventually causing asterisk to stop processing requests of any kind.

Predictions

Exploit likelihood

83%

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-43992 dos multiple verified

Juan Sacco · 2018-02-07

Asterisk 13.17.2 - 'chan_skinny' Remote Memory Corruption

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
debian	bullseye	fixed	`1:13.18.3~dfsg-1`
debian	sid	fixed	`1:13.18.3~dfsg-1`

Application impact

Vendor	Product	Versions
digium	certified_asterisk	`{"endIncluding":"13.13"}`
digium	certified_asterisk	`13.13`
digium	asterisk	`{"endIncluding":"13.8.2"}`

References

CWEs

CWE-459

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

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