CVE-2005-4147: The TCLHTTPd service in Lyris ListManager before 8.9b allows remote attackers to obtain source code for arbitr

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MEDIUM 6.5DOWNGRADE

CVE-2005-4147 is a medium-severity flaw (CVSS 6.5) affecting listmanager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The TCLHTTPd service in Lyris ListManager before 8.9b allows remote attackers to obtain source code for arbitrary .tml (TCL) files via (1) a request with a trailing null byte (%00), which might also require (2) an authentication bypass step that involves a username with a trailing "@" characters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.5 (Medium)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2005-12-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: lyris technologies inc

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

Am I affected?

Timeline

2005-12-10 11:03 UTCPublished CVE record published
2026-06-16 22:18 UTCUpdated Record last modified

lyris technologies inc listmanager DOWNGRADE

Affected: 5.0 · 6.0 · 7.0 · 8.0 · 8.8a

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.0 (Debian / Ubuntu)

apt-cache madison listmanager sudo apt install listmanager=<VERSION_BEFORE_5.0> sudo apt-mark hold listmanager

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

dnf --showduplicates list listmanager sudo dnf downgrade listmanager-<VERSION_BEFORE_5.0> sudo dnf versionlock add listmanager

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-2005-4147?

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

Is CVE-2005-4147 being exploited?

CVE-2005-4147 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-2005-4147 affect?

CVE-2005-4147 affects listmanager. Severity is medium (CVSS 6.5). The TCLHTTPd service in Lyris ListManager before 8.9b allows remote attackers to obtain source code for arbitrary .tml (TCL) files via (1) a request with a trailing null byte (%00), which might also require (2) an authentication bypass step

How urgent is CVE-2005-4147?

Priority 48/100. Public exploit reference

Related CVEs

CVE-2005-4149 MEDIUM 5.0 DOWNGRADE Lyris ListManager 8.8 through 8.9b allows remote attackers to obtain sensitive information by causing errors i
CVE-2005-4148 MEDIUM 5.0 DOWNGRADE Lyris ListManager 8.5, and possibly other versions before 8.8, includes sensitive information in the env hidde
CVE-2005-4146 MEDIUM 5.0 DOWNGRADE Lyris ListManager before 8.9b allows remote attackers to obtain sensitive information via a request to the TCL
CVE-2005-4145 MEDIUM 6.5 DOWNGRADE The MSDE version of Lyris ListManager 5.0 through 8.9b configures the sa account in the database to use a pass
CVE-2005-4142 HIGH 7.5 DOWNGRADE The web interface for subscribing new users in Lyris ListManager 5.0 through 8.8b, in combination with a line

References

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