CVE-2009-1386

unknown

Published — · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

1.0

Description

ssl/s3_pkt.c in OpenSSL before 0.9.8i allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a DTLS ChangeCipherSpec packet that occurs before ClientHello.

Predictions

Exploit likelihood

20%

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-8873 dos multiple verified

Jon Oberheide · 2009-06-04

OpenSSL < 0.9.8i - DTLS ChangeCipherSpec Remote Denial of Service

Source code queued for fetch — refresh in a moment.

Metasploit modules

auxiliary_dos/ssl/dtls_changecipherspec rank 300

OpenSSL DTLS ChangeCipherSpec Remote DoS

Source fetch failed: fetch_error — view the original via the link above.

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`0.9.8k-1`
sid	Fixed	`0.9.8k-1`
forky	Fixed	`0.9.8k-1`
bullseye	Fixed	`0.9.8k-1`
bookworm	Fixed	`0.9.8k-1`

References

https://security-tracker.debian.org/tracker/CVE-2009-1386

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

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