CVE-2013-0285: The nori gem 2.0.x before 2.0.2, 1.1.x before 1.1.4, and 1.0.x before 1.0.3 for Ruby does not properly restric

This month

HIGH 7.5DOWNGRADE

CVE-2013-0285 is a high-severity flaw (CVSS 7.5) affecting nori gem. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The nori gem 2.0.x before 2.0.2, 1.1.x before 1.1.4, and 1.0.x before 1.0.3 for Ruby does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) involving nested XML entity references, by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion, a similar vulnerability to C

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-20
Published	2013-04-09
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: nori gem project

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

Am I affected?

Timeline

2013-04-09 20:55 UTCPublished CVE record published
2026-06-16 23:49 UTCUpdated Record last modified

nori gem project nori gem DOWNGRADE

Affected: 2.0.0 · 2.0.1 · 1.1.0 · 1.1.1 · 1.1.2 · 1.1.3 · 1.0.0 · 1.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy nori-gem || rpm -q nori-gem || nori-gem --version

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison nori-gem sudo apt install nori-gem=<VERSION_BEFORE_1.0.0> sudo apt-mark hold nori-gem

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

dnf --showduplicates list nori-gem sudo dnf downgrade nori-gem-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add nori-gem

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-2013-0285?

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

Is CVE-2013-0285 being exploited?

CVE-2013-0285 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-2013-0285 affect?

CVE-2013-0285 affects nori gem. Severity is high (CVSS 7.5). The nori gem 2.0.x before 2.0.2, 1.1.x before 1.1.4, and 1.0.x before 1.0.3 for Ruby does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a

How urgent is CVE-2013-0285?

Priority 47/100. High severity

Software pages

Ruby vulnerabilities

References

← Back to latest CVEs