CVE-2003-1441: Posadis 0.50.4 through 0.50.8 allows remote attackers to cause a denial of service (crash) via a DNS message w

Routine

MEDIUM 4.3DOWNGRADE

CVE-2003-1441 is a medium-severity flaw (CVSS 4.3) affecting posadis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Posadis 0.50.4 through 0.50.8 allows remote attackers to cause a denial of service (crash) via a DNS message without a question section, which triggers null dereference.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-20
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: posadis

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

posadis posadis DOWNGRADE

Affected: 0.50.4 · 0.50.5 · 0.50.6 · 0.50.7 · 0.50.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.50.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.50.4 (Debian / Ubuntu)

apt-cache madison posadis sudo apt install posadis=<VERSION_BEFORE_0.50.4> sudo apt-mark hold posadis

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

dnf --showduplicates list posadis sudo dnf downgrade posadis-<VERSION_BEFORE_0.50.4> sudo dnf versionlock add posadis

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-2003-1441?

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

Is CVE-2003-1441 being exploited?

CVE-2003-1441 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-2003-1441 affect?

CVE-2003-1441 affects posadis. Severity is medium (CVSS 4.3). Posadis 0.50.4 through 0.50.8 allows remote attackers to cause a denial of service (crash) via a DNS message without a question section, which triggers null dereference.

How urgent is CVE-2003-1441?

Priority 32/100. No elevated risk signals yet.

Related CVEs

CVE-2004-0789 MEDIUM 5.0 DOWNGRADE DOWNGRADE Multiple implementations of the DNS protocol, including (1) Poslib 1.0.2-1 and earlier as used by Posadis, (2)
CVE-2002-0501 HIGH 7.2 DOWNGRADE Format string vulnerability in log_print() function of Posadis DNS server before version m5pre2 allows local u

References

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