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CVE-2009-1632

16
FAUCET Score

CVE-2009-1632 describes multiple memory leak vulnerabilities in Ipsec-tools versions prior to 0.7.2. These flaws, found in signature verification during X.509 user authentication and the NAT-Traversal keepalive implementation, could lead to a denial of service due to memory consumption. With a CVSS score of 5.0, this vulnerability is considered medium severity. It can be exploited remotely with low attack complexity, requiring no authentication, and primarily impacts availability. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, indicating a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.7.1CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:*:*:*:*:*:*:*:*
0.1CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.1:*:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.2:*:*:*:*:*:*:*
0.2.1CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.1:*:*:*:*:*:*:*
0.2.2CPE matchmatch criteria
cpe:2.3:a:ipsec-tools:ipsec-tools:0.2.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
78.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0202 is in the 67th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ipsec-tools-0:0.6.5-13.el5_3.1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ipsec-tools

Vendor Advisories (1)

redhatCVE-2009-1632Moderate

ipsec-tools: multiple memory leaks fixed in 0.7.2

Apr 22, 2009

References

cvsweb.netbsd.org / bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/crypto_openssl.c
cvsweb.netbsd.org / bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/crypto_openssl.c.diff
cvsweb.netbsd.org / bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/nattraversal.c
cvsweb.netbsd.org / bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/nattraversal.c.diff
kb.juniper.net / InfoCenter/index
lists.apple.com / archives/security-announce/2009/Nov/msg00000.html
lists.opensuse.org / opensuse-security-announce/2009-07/msg00002.html
marc.info
secunia.com / advisories/35153
secunia.com / advisories/35159
secunia.com / advisories/35212
secunia.com / advisories/35404
secunia.com / advisories/35685
security.gentoo.org / glsa/glsa-200905-03.xml
sourceforge.net / mailarchive/forum.php
Patch
sourceforge.net / project/shownotes.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10581
trac.ipsec-tools.net / ticket/303
support.apple.com / kb/HT3937
debian.org / security/2009/dsa-1804
mandriva.com / security/advisories
openwall.com / lists/oss-security/2009/05/12/3
redhat.com / support/errata/RHSA-2009-1036.html
securityfocus.com / bid/34765
ubuntu.com / usn/USN-785-1
vupen.com / english/advisories/2009/3184