PatchTheCVECVE-2005-0398: The KAME racoon daemon in ipsec-tools before 0.5 allows remote attackers to cause a denial of service (crash)
44
This month
MEDIUM 5.0WATCHLISTDOWNGRADEDOWNGRADEDOWNGRADE
CVE-2005-0398 is a medium-severity flaw (CVSS 5.0) affecting ipsec-tools, racoon, propack. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The KAME racoon daemon in ipsec-tools before 0.5 allows remote attackers to cause a denial of service (crash) via malformed ISAKMP packets.
Why this priority
- On your watchlist
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 5.0 (Medium) |
| EPSS exploit chance | 2.4% (top 16%) |
| CISA exploited list | No |
| Published | 2005-03-14 |
| 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
ipsec-tools ipsec-tools DOWNGRADE
Affected: 0.3.3 · 0.5
Fixed in: no fixed release known
Safe to downgrade to: a release before 0.3.3
1. Check installed version
apt-cache policy ipsec-tools || rpm -q ipsec-tools || ipsec-tools --version
2. No fixed release: DOWNGRADE to a release before 0.3.3 (Debian / Ubuntu)
apt-cache madison ipsec-tools
sudo apt install ipsec-tools=<VERSION_BEFORE_0.3.3>
sudo apt-mark hold ipsec-tools
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list ipsec-tools
sudo dnf downgrade ipsec-tools-<VERSION_BEFORE_0.3.3>
sudo dnf versionlock add ipsec-tools
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
kame racoon DOWNGRADE
Affected: 2003-07-11 · 2004-04-05 · 2004-04-07b · 2004-05-03 · 2005-01-03 · 2005-01-10 · 2005-01-17 · 2005-01-24
Fixed in: no fixed release known
Safe to downgrade to: a release before 2003-07-11
1. Check installed version
apt-cache policy racoon || rpm -q racoon || racoon --version
2. No fixed release: DOWNGRADE to a release before 2003-07-11 (Debian / Ubuntu)
apt-cache madison racoon
sudo apt install racoon=<VERSION_BEFORE_2003-07-11>
sudo apt-mark hold racoon
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list racoon
sudo dnf downgrade racoon-<VERSION_BEFORE_2003-07-11>
sudo dnf versionlock add racoon
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
sgi propack DOWNGRADE
Affected: 3.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0
1. Check installed version
apt-cache policy propack || rpm -q propack || propack --version
2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)
apt-cache madison propack
sudo apt install propack=<VERSION_BEFORE_3.0>
sudo apt-mark hold propack
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list propack
sudo dnf downgrade propack-<VERSION_BEFORE_3.0>
sudo dnf versionlock add propack
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
altlinux alt linux MITIGATE
Affected: 2.3
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.3
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
redhat enterprise linux MITIGATE
Affected: 3.0 · 4.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
redhat enterprise linux desktop MITIGATE
Affected: 3.0 · 4.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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-2005-0398?
ipsec-tools: downgrade or apply the listed mitigation; racoon: downgrade or apply the listed mitigation; propack: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2005-0398 being exploited?
CVE-2005-0398 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-2005-0398 affect?
CVE-2005-0398 affects ipsec-tools, racoon, propack. Severity is medium (CVSS 5.0). The KAME racoon daemon in ipsec-tools before 0.5 allows remote attackers to cause a denial of service (crash) via malformed ISAKMP packets.
How urgent is CVE-2005-0398?
Priority 44/100. On your watchlist
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