CVE-2009-1632

CVE-2009-1632 is a medium-severity vulnerability in Ipsec-tools with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 2% (79th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Ipsec-tools
• Published: 2009-05-14
• Last modified: 2026-06-16

Description

Multiple memory leaks in Ipsec-tools before 0.7.2 allow remote attackers to cause a denial of service (memory consumption) via vectors involving (1) signature verification during user authentication with X.509 certificates, related to the eay_check_x509sign function in src/racoon/crypto_openssl.c; and (2) the NAT-Traversal (aka NAT-T) keepalive implementation, related to src/racoon/nattraversal.c.

Frequently asked questions

What is CVE-2009-1632?

Multiple memory leaks in Ipsec-tools before 0.7.2 allow remote attackers to cause a denial of service (memory consumption) via vectors involving (1) signature verification during user authentication with X.509 certificates, related to the eay_check_x509sign function in src/racoon/crypto_openssl.c; and (2) the NAT-Traversal (aka NAT-T) keepalive implementation, related to src/racoon/nattraversal.c.

How severe is CVE-2009-1632?

CVE-2009-1632 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-1632 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1632?

CVE-2009-1632 primarily affects Ipsec-tools. In total, 35 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1632?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-1632 published?

CVE-2009-1632 was published on 2009-05-14 and last updated on 2026-06-16.

References

• http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/crypto_openssl.c
• http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/crypto_openssl.c.diff?r1=1.11.6.4&r2=1.11.6.5&f=h
• http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/nattraversal.c
• http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/nattraversal.c.diff?r1=1.6&r2=1.6.6.1&f=h
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
• http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
• http://marc.info/?l=oss-security&m=124101704828036&w=2
• 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/mailarchive/forum.php?thread_name=20090422151825.GB46988%40zeninc.net&forum_name=ipsec-tools-announce
• http://sourceforge.net/project/shownotes.php?group_id=74601&release_id=677611
• http://support.apple.com/kb/HT3937
• http://www.debian.org/security/2009/dsa-1804
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:114
• http://www.openwall.com/lists/oss-security/2009/05/12/3
• 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://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10581
• https://trac.ipsec-tools.net/ticket/303

Affected products (35)

• cpe:2.3:a:ipsec-tools:ipsec-tools:*:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc1:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc2:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc3:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc4:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3:rc5:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3_rc1:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3_rc2:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3_rc3:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3_rc4:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.3_rc5:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.4:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.4:rc1:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.5:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.3:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.5:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.6.7:*:*:*:*:*:*:*
• cpe:2.3:a:ipsec-tools:ipsec-tools:0.7:*:*:*:*:*:*:*

More vulnerabilities in Ipsec-tools

• CVE-2004-0607 — Critical (CVSS 10.0): The eay_check_x509cert function in KAME Racoon successfully verifies certificates even when OpenSSL validation fails,…
• CVE-2015-4047 — High (CVSS 7.8): racoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and…
• CVE-2008-3652 — High (CVSS 7.8): src/racoon/handler.c in racoon in ipsec-tools does not remove an "orphaned ph1" (phase 1) handle when it has been…
• CVE-2005-3732 — High (CVSS 7.8): The Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in racoon in ipsec-tools before 0.6.3, when…
• CVE-2016-10396 — High (CVSS 7.5): The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity attack when parsing and…
• CVE-2009-1574 — Medium (CVSS 5.0): racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via…

All CVEs affecting Ipsec-tools →

Other CWE-399 (Resource Management Errors) vulnerabilities

• CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
• CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
• CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →