CVE-2000-0617: Buffer overflow in xconq and cconq game programs on Red Hat Linux allows local users to gain additional privil

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MEDIUM 4.6WATCHLISTDOWNGRADE

CVE-2000-0617 is a medium-severity flaw (CVSS 4.6) affecting xconq. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in xconq and cconq game programs on Red Hat Linux allows local users to gain additional privileges via long USER environmental variable.

Why this priority

Public exploit reference
On your watchlist

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Published	2000-06-22
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: stanley t. shebs

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

Am I affected?

Timeline

2000-06-22 04:00 UTCPublished CVE record published
2026-06-16 21:52 UTCUpdated Record last modified

stanley t. shebs xconq DOWNGRADE

Affected: 7.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.2.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 7.2.2 (Debian / Ubuntu)

apt-cache madison xconq sudo apt install xconq=<VERSION_BEFORE_7.2.2> sudo apt-mark hold xconq

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

dnf --showduplicates list xconq sudo dnf downgrade xconq-<VERSION_BEFORE_7.2.2> sudo dnf versionlock add xconq

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Stanley T. Shebs Xconq 7.2.2 - xconq Buffer Overflow

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-2000-0617?

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

Is CVE-2000-0617 being exploited?

CVE-2000-0617 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-2000-0617 affect?

CVE-2000-0617 affects xconq. Severity is medium (CVSS 4.6). Buffer overflow in xconq and cconq game programs on Red Hat Linux allows local users to gain additional privileges via long USER environmental variable.

How urgent is CVE-2000-0617?

Priority 40/100. Public exploit reference; On your watchlist

Related CVEs

CVE-2003-0607 MEDIUM 4.6 DOWNGRADE Buffer overflow in xconq 7.4.1 allows local users to become part of the "games" group via the (1) USER or (2)
CVE-2000-0618 MEDIUM 4.6 DOWNGRADE Buffer overflow in xconq and cconq game programs on Red Hat Linux allows local users to gain additional privil

References

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