CVE-1999-1244: IPFilter 3.2.3 through 3.2.10 allows local users to modify arbitrary files via a symlink attack on the saved o

Routine

HIGH 7.2DOWNGRADE

CVE-1999-1244 is a high-severity flaw (CVSS 7.2) affecting ipfilter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IPFilter 3.2.3 through 3.2.10 allows local users to modify arbitrary files via a symlink attack on the saved output file.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Published	1999-04-15
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: darren reed

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

1999-04-15 04:00 UTCPublished CVE record published
2026-06-16 21:50 UTCUpdated Record last modified

darren reed ipfilter DOWNGRADE

Affected: 3.2.3 · 3.2.4 · 3.2.5 · 3.2.6 · 3.2.7 · 3.2.8 · 3.2.9 · 3.2.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.2.3

1. Check installed version

apt-cache policy ipfilter || rpm -q ipfilter || ipfilter --version

2. No fixed release: DOWNGRADE to a release before 3.2.3 (Debian / Ubuntu)

apt-cache madison ipfilter sudo apt install ipfilter=<VERSION_BEFORE_3.2.3> sudo apt-mark hold ipfilter

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ipfilter sudo dnf downgrade ipfilter-<VERSION_BEFORE_3.2.3> sudo dnf versionlock add ipfilter

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.

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.

Quick answers

How do I fix CVE-1999-1244?

ipfilter: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-1999-1244 being exploited?

CVE-1999-1244 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-1999-1244 affect?

CVE-1999-1244 affects ipfilter. Severity is high (CVSS 7.2). IPFilter 3.2.3 through 3.2.10 allows local users to modify arbitrary files via a symlink attack on the saved output file.

How urgent is CVE-1999-1244?

Priority 32/100. High severity

Related CVEs

CVE-2009-1476 HIGH 7.2 DOWNGRADE Buffer overflow in lib/load_http.c in ippool in Darren Reed IPFilter (aka IP Filter) 4.1.31 allows local users
CVE-2002-1978 HIGH 7.5 DOWNGRADE IPFilter 3.1.1 through 3.4.28 allows remote attackers to bypass firewall rules by sending a PASV command strin
CVE-2002-0515 MEDIUM 5.0 UPGRADE IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filte
CVE-2001-0402 HIGH 7.5 UPGRADE UPGRADE IPFilter 3.4.16 and earlier does not include sufficient session information in its cache, which allows remote
CVE-2000-0553 LOW 2.6 DOWNGRADE Race condition in IPFilter firewall 3.4.3 and earlier, when configured with overlapping "return-rst" and "keep

References

← Back to latest CVEs