CVE-2006-1320: util.c in rssh 2.3.0 in Debian GNU/Linux does not use braces to make a block, which causes a check for CVS to

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HIGH 7.5WATCHLISTDOWNGRADE

CVE-2006-1320 is a high-severity flaw (CVSS 7.5) affecting rssh. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

util.c in rssh 2.3.0 in Debian GNU/Linux does not use braces to make a block, which causes a check for CVS to always succeed and allows rsync and rdist to bypass intended access restrictions in rssh.conf.

Why this priority

High severity
On your watchlist

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2006-03-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: rssh

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

Am I affected?

Timeline

2006-03-20 11:02 UTCPublished CVE record published
2026-06-16 22:22 UTCUpdated Record last modified

rssh rssh DOWNGRADE

Affected: 2.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.3.0 (Debian / Ubuntu)

apt-cache madison rssh sudo apt install rssh=<VERSION_BEFORE_2.3.0> sudo apt-mark hold rssh

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

dnf --showduplicates list rssh sudo dnf downgrade rssh-<VERSION_BEFORE_2.3.0> sudo dnf versionlock add rssh

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-2006-1320?

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

Is CVE-2006-1320 being exploited?

CVE-2006-1320 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-2006-1320 affect?

CVE-2006-1320 affects rssh. Severity is high (CVSS 7.5). util.c in rssh 2.3.0 in Debian GNU/Linux does not use braces to make a block, which causes a check for CVS to always succeed and allows rsync and rdist to bypass intended access restrictions in rssh.conf.

How urgent is CVE-2006-1320?

Priority 51/100. High severity; On your watchlist

Software pages

Debian vulnerabilities

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References

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