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Vulnerability record · CVE-2009-1574 · published 6 May 2009

CVE-2009-1574: Ipsec-tools vulnerability

IIpsec Tools · Ipsec Tools

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via crafted fragmented packets without a payload, which triggers a NULL pointer dereference.

5.0 CVSS 2.0 Medium EPSS 12% · top 4.1%
5.0CVSS 2.0 base score
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
56References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via crafted fragmented packets without a payload, which triggers a NULL pointer dereference.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://lists.apple.com/archives/security-announce/2010//Dec/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
http://secunia.com/advisories/35113
http://secunia.com/advisories/35153
http://secunia.com/advisories/35159
http://secunia.com/advisories/35212
http://secunia.com/advisories/35404
http://secunia.com/advisories/35685
http://security.gentoo.org/glsa/glsa-200905-03.xml
http://sourceforge.net/project/shownotes.php?group_id=74601&release_id=677611
http://support.apple.com/kb/HT3937
http://support.apple.com/kb/HT4298
http://www.debian.org/security/2009/dsa-1804
http://www.mandriva.com/security/advisories?name=MDVSA-2009:112
http://www.openwall.com/lists/oss-security/2009/04/29/6 Patch
http://www.openwall.com/lists/oss-security/2009/05/04/3 Patch
http://www.redhat.com/support/errata/RHSA-2009-1036.html
http://www.securityfocus.com/bid/34765
http://www.ubuntu.com/usn/USN-785-1
http://www.vupen.com/english/advisories/2009/3184
https://bugzilla.redhat.com/show_bug.cgi?id=497990 ExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/50412
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9624
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00725.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00746.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00789.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
http://lists.apple.com/archives/security-announce/2010//Dec/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
http://secunia.com/advisories/35113
http://secunia.com/advisories/35153
http://secunia.com/advisories/35159
http://secunia.com/advisories/35212
http://secunia.com/advisories/35404
http://secunia.com/advisories/35685
http://security.gentoo.org/glsa/glsa-200905-03.xml
http://sourceforge.net/project/shownotes.php?group_id=74601&release_id=677611

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0607Ipsec-tools vulnerabilityThe eay_check_x509cert function in KAME Racoon successfully verifies certificates even when OpenSSL validation fails, which could allow remote attack…EPSS 5.4%7.8CVE-2015-4047Ipsec-tools null pointer dereference vulnerabilityracoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) via a serie…EPSS 9.8%7.8CVE-2008-3652Ipsec-tools vulnerabilitysrc/racoon/handler.c in racoon in ipsec-tools does not remove an "orphaned ph1" (phase 1) handle when it has been initiated remotely, which allows re…EPSS 3.4%7.8CVE-2005-3732Ipsec-tools vulnerabilityThe Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in racoon in ipsec-tools before 0.6.3, when running in aggressive mode, all…EPSS 4.4%7.5CVE-2016-10396Ipsec-tools vulnerabilityThe racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity attack when parsing and storing ISAKMP fragments. The…EPSS 2.9%5.0CVE-2009-1632Ipsec-tools vulnerabilityMultiple memory leaks in Ipsec-tools before 0.7.2 allow remote attackers to cause a denial of service (memory consumption) via vectors involving (1) …EPSS 2.0%5.0CVE-2005-0398Ipsec-tools vulnerabilityThe KAME racoon daemon in ipsec-tools before 0.5 allows remote attackers to cause a denial of service (crash) via malformed ISAKMP packets.EPSS 2.4%4.3CVE-2007-1841Ipsec-tools vulnerabilityThe isakmp_info_recv function in src/racoon/isakmp_inf.c in racoon in Ipsec-tools before 0.6.7 allows remote attackers to cause a denial of service (…EPSS 2.9%

Source: NIST National Vulnerability Database (record CVE-2009-1574), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.