PatchTheCVECVE-2009-1632: Multiple memory leaks in Ipsec-tools before 0.7.2 allow remote attackers to cause a denial of service (memory
CVE-2009-1632 is a medium-severity flaw (CVSS 5.0) affecting ipsec-tools. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.0 (Medium) |
| EPSS exploit chance | 2.0% (top 19%) |
| CISA exploited list | No |
| Weakness | CWE-399 |
| Published | 2009-05-14 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2009-1632?
ipsec-tools: upgrade to newer than 0.7.1. Exact commands for each OS are on this page.
Is CVE-2009-1632 being exploited?
CVE-2009-1632 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2009-1632 affect?
CVE-2009-1632 affects ipsec-tools. Severity is medium (CVSS 5.0). 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 e
How urgent is CVE-2009-1632?
Priority 38/100. No elevated risk signals yet.
Software pages
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