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Fencer Intel
high 7.5

CVE-2013-1800 json

crack does not properly restrict casts of string values

published 13y ago modified 4mo ago also GHSA-m7fq-cf8q-35q7 , EUVD-2017-0271

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

The crack gem 0.3.1 and earlier for Ruby does not properly restrict casts of string values, which might allow remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion, a similar vulnerability to CVE-2013-0156.

Patch / fix

  • rubygems crack 0.3.2
  • ruby-crack Debian 14, Debian 13, Debian 12 0.3.2-1

debian advisories DEBIAN-CVE-2013-1800

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-1800 updated cvss 7.5

rubygem-crack: YAML parameter parsing vulnerability

  • Red Hat OpenShift Enterprise 1 rubygem-crack Red Hat Satellite 6 ruby193-rubygem-crack
    affected: no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.95% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/jnunemaker/crack/commit/e3da1212a1f84a898ee3601336d1dbbf118fb5f6 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
rubygems crack
<0.3.2
0.3.2

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
  • CWE-704 Incorrect Type Conversion or Cast
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.