CVE-2009-1632

Multiple memory leaks in Ipsec-tools before 0.7.2 allow remote attackers to cause a denial of...

5.0 MediumFix available

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.

Exploit likelihood

2.02%Down 2.3 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2009-1632
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-399
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-1632
Updated: 2026-11-02

EUVDEUVD-2009-1627 No score

Record: EUVD-2009-1627
Updated: 2026-11-03

GitHub AdvisoriesGHSA-r3x2-g3qw-mvq3 No score

Multiple memory leaks in Ipsec-tools before 0.7.2 allow remote attackers to cause a denial of...

Record: GHSA-r3x2-g3qw-mvq3
Updated: 2026-11-02

Affected products

ipsec-tools

Affected packages

Affected packages
Package	Affected	Fixed
`ipsec-tools` Debian:4.0	before 1:0.6.6-3.1etch3, plus listed versions 1:0.6.6-3.11:0.6.6-3.1etch1	1:0.6.6-3.1etch3
`ipsec-tools` Debian:5.0	before 1:0.7.1-1.3+lenny2, plus listed versions 1:0.7.1-1.3	1:0.7.1-1.3+lenny2
`ipsec-tools` Red Hat:enterprise_linux:5::client	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1
`ipsec-tools-debuginfo` Red Hat:enterprise_linux:5::client	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1
`ipsec-tools` Red Hat:enterprise_linux:5::server	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1
`ipsec-tools-debuginfo` Red Hat:enterprise_linux:5::server	before 0:0.6.5-13.el5_3.1	0:0.6.5-13.el5_3.1

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-1632 is a medium vulnerability (CVSS 5.0) in Ipsec-tools, published May 14, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.02%, the 80th percentile. Fixed in ipsec-tools 1:0.6.6-3.1etch3.

References

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