CVE-2009-1387

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-06-04 · updated 2026-06-16
Weakness: CWE-476

Description

The dtls1_retrieve_buffered_fragment function in ssl/d1_both.c in OpenSSL before 1.0.0 Beta 2 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence DTLS handshake message, related to a "fragment bug."

Affected products

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

How to fix

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

References

http://cvs.openssl.org/chngview?cn=17958
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=1838&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/37003
http://secunia.com/advisories/38794

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