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CVE-2013-1889: mod_ruid2 before 0.9.8 improperly handles file descriptors which allows remote attackers to bypass security us

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HIGH 7.5REMOTEUPGRADE

CVE-2013-1889 is a high-severity flaw (CVSS 7.5) affecting mod ruid2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

mod_ruid2 before 0.9.8 improperly handles file descriptors which allows remote attackers to bypass security using a CGI script to break out of the chroot.

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance2.2% (top 18%)
CISA exploited listNo
WeaknessCWE-20
Published2019-11-08
Last modified2026-06-16
Publisher (CNA): Red Hat, Inc. · Vendor: mod ruid2 project

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

Am I affected?

Timeline

mod ruid2 project mod ruid2 UPGRADE
Affected: < 0.9.8
Fixed in: 0.9.8
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy mod-ruid2 || rpm -q mod-ruid2 || mod-ruid2 --version
2. UPGRADE to 0.9.8 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade mod-ruid2
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade mod-ruid2
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2013-1889?

mod ruid2: upgrade to 0.9.8. Exact commands for each OS are on this page.

Is CVE-2013-1889 being exploited?

CVE-2013-1889 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-2013-1889 affect?

CVE-2013-1889 affects mod ruid2. Severity is high (CVSS 7.5). mod_ruid2 before 0.9.8 improperly handles file descriptors which allows remote attackers to bypass security using a CGI script to break out of the chroot.

How urgent is CVE-2013-1889?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

References

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