CVE-2009-1386

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 80.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-06-04 · updated 2026-06-16
Weakness: CWE-476

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.

Affected products

Canonical Ubuntu Linux: 6.06, 8.04, 8.10, 9.04
OpenSSL: from 0.9.8 (excl.) before 0.9.8i — fixed in 0.9.8i
RedHat Openssl: 0.9.6-15, 0.9.6b-3, 0.9.7a-2

How to fix

Upgrade to a fixed version: OpenSSL 0.9.8i. Check the vendor advisory for mitigations.

References

http://cvs.openssl.org/chngview?cn=17369
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02029444
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://rt.openssl.org/Ticket/Display.html?id=1679&user=guest&pass=guest
http://secunia.com/advisories/35571
http://secunia.com/advisories/35685
http://secunia.com/advisories/35729
http://secunia.com/advisories/36533
http://secunia.com/advisories/38794
http://secunia.com/advisories/38834

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