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Fencer Intel
medium 6.4

CVE-2013-7205 json

Off-by-one error in the process_cgivars function in contrib/daemonchk.c in Nagios Core 3.5.1, 4.0.2, and earlier allows remote authenticate…

published 2014-01-14 12 y ago modified 2026-06-17 4 mo ago also EUVD-2013-6988

cvss
6.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Off-by-one error in the process_cgivars function in contrib/daemonchk.c in Nagios Core 3.5.1, 4.0.2, and earlier allows remote authenticated users to obtain sensitive information from process memory or cause a denial of service (crash) via a long string in the last key value in the variable list, which triggers a heap-based buffer over-read.

Patch / fix

  • nagios3 Ubuntu 14.04 LTS 3.5.1-1ubuntu1.1
  • nagios3 Ubuntu 16.04 LTS 3.5.1.dfsg-2.1ubuntu1.1

ubuntu advisories UBUNTU-CVE-2013-7205

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2013-7205 updated cvss 4.0

nagios: denial of service due to off-by-one flaw in process_cgivars()

  • Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) nagios Red Hat Enterprise Linux OpenStack Platform 6 (Juno) nagios
    affected: no fix available “Fix deferred”
  • Red Hat OpenStack Platform 3 nagios Red Hat OpenStack Platform 4 nagios
    affected: no fix planned “Will not fix”

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

4.60% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.