CVE-2003-0417: Directory traversal vulnerability in Son hServer 0.2 allows remote attackers to read arbitrary files via ".|."

Routine

MEDIUM 5.0DOWNGRADE

CVE-2003-0417 is a medium-severity flaw (CVSS 5.0) affecting son hserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in Son hServer 0.2 allows remote attackers to read arbitrary files via ".|." (modified dot-dot) sequences.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Published	2003-06-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: super-m

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

Am I affected?

Timeline

2003-06-30 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

super-m son hserver DOWNGRADE

Affected: 0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2

1. Check installed version

apt-cache policy son-hserver || rpm -q son-hserver || son-hserver --version

2. No fixed release: DOWNGRADE to a release before 0.2 (Debian / Ubuntu)

apt-cache madison son-hserver sudo apt install son-hserver=<VERSION_BEFORE_0.2> sudo apt-mark hold son-hserver

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

dnf --showduplicates list son-hserver sudo dnf downgrade son-hserver-<VERSION_BEFORE_0.2> sudo dnf versionlock add son-hserver

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-2003-0417?

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

Is CVE-2003-0417 being exploited?

CVE-2003-0417 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-2003-0417 affect?

CVE-2003-0417 affects son hserver. Severity is medium (CVSS 5.0). Directory traversal vulnerability in Son hServer 0.2 allows remote attackers to read arbitrary files via ".|." (modified dot-dot) sequences.

How urgent is CVE-2003-0417?

Priority 38/100. No elevated risk signals yet.

References

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