CVE-2012-2103: The qmailscan plugin for Munin 1.4.5 allows local users to overwrite arbitrary files via a symlink attack on t

Routine

LOW 1.2DOWNGRADE

CVE-2012-2103 is a low-severity flaw (CVSS 1.2) affecting munin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The qmailscan plugin for Munin 1.4.5 allows local users to overwrite arbitrary files via a symlink attack on temporary files with predictable names.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	1.2 (Low)
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-59
Published	2012-08-26
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: munin-monitoring

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

Am I affected?

Timeline

2012-08-26 21:55 UTCPublished CVE record published
2026-06-16 23:40 UTCUpdated Record last modified

munin-monitoring munin DOWNGRADE

Affected: 1.4.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4.5 (Debian / Ubuntu)

apt-cache madison munin sudo apt install munin=<VERSION_BEFORE_1.4.5> sudo apt-mark hold munin

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

dnf --showduplicates list munin sudo dnf downgrade munin-<VERSION_BEFORE_1.4.5> sudo dnf versionlock add munin

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-2012-2103?

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

Is CVE-2012-2103 being exploited?

CVE-2012-2103 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-2012-2103 affect?

CVE-2012-2103 affects munin. Severity is low (CVSS 1.2). The qmailscan plugin for Munin 1.4.5 allows local users to overwrite arbitrary files via a symlink attack on temporary files with predictable names.

How urgent is CVE-2012-2103?

Priority 11/100. No elevated risk signals yet.

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References

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