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CVE-2013-7205

Off-by-one error in the process_cgivars function in contrib/daemonchk.c in Nagios Core 3.5.1, 4.0...

6.4 MediumFix available

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.

Exploit likelihood

4.60%Up 3.3 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 6.4

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.

Record
CVE-2013-7205
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:P/I:N/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2013-7205
Updated
2026-11-02
EUVDEUVD-2013-6988 No score

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.

Record
EUVD-2013-6988
Updated
2026-11-03
GitHub AdvisoriesGHSA-m23h-2mvj-h557 No score

Off-by-one error in the process_cgivars function in contrib/daemonchk.c in Nagios Core 3.5.1, 4.0...

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.

Record
GHSA-m23h-2mvj-h557
Weakness
CWE-119
Updated
2026-11-02
OSVMGASA-2014-0010 No score

Updated nagios package fixes security vulnerability

A flaw was reported and fixed in Nagios, which can be exploited to cause a denial of service. This vulnerability is caused due to an off-by-one error within the process_cgivars() function, which can be exploited to cause an out-of-bounds read by sending a specially-crafted key value to the Nagios web UI (CVE-2013-7108, CVE-2013-7205). An issue that prevented the service from starting has also been fixed.

Record
MGASA-2014-0010
Updated
2026-11-02
OSVUBUNTU-CVE-2013-7205 No score

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.

Record
UBUNTU-CVE-2013-7205
Updated
2026-11-02
OSVUSN-3253-1 No score

nagios3 vulnerabilities

It was discovered that Nagios incorrectly handled certain long strings. A remote authenticated attacker could use this issue to cause Nagios to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2013-7108, CVE-2013-7205)

It was discovered that Nagios incorrectly handled certain long messages to cmd.cgi. A remote attacker could possibly use this issue to cause Nagios to crash, resulting in a denial of service. (CVE-2014-1878)

Dawid Golunski discovered that Nagios incorrectly handled symlinks when accessing log files. A local attacker could possibly use this issue to elevate privileges. In the default installation of Ubuntu, this should be prevented by the Yama link restrictions. (CVE-2016-9566)

Record
USN-3253-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
nagios3
Debian:8
From an advisory covering 5 CVEs
before 3.5.1.dfsg-2+deb8u1, plus listed versions
3.5.1.dfsg-2
3.5.1.dfsg-2+deb8u1
nagios
Mageia:3
From an advisory covering 2 CVEs
before 3.4.4-4.2.mga3
3.4.4-4.2.mga3
nagios3
Ubuntu:14.04:LTS
before 3.5.1-1ubuntu1.1, plus listed versions
3.4.1-5ubuntu23.4.1-5ubuntu33.5.1-1ubuntu1
3.5.1-1ubuntu1.1
nagios3
Ubuntu:16.04:LTS
before 3.5.1.dfsg-2.1ubuntu1.1, plus listed versions
3.5.1-1ubuntu43.5.1.dfsg-2ubuntu13.5.1.dfsg-2ubuntu23.5.1.dfsg-2.1ubuntu1
3.5.1.dfsg-2.1ubuntu1.1
nagios3
Ubuntu:14.04:LTS
From an advisory covering 4 CVEs
before 3.5.1-1ubuntu1.1, plus listed versions
3.4.1-5ubuntu23.4.1-5ubuntu33.5.1-1ubuntu1
3.5.1-1ubuntu1.1
nagios3
Ubuntu:16.04:LTS
From an advisory covering 4 CVEs
before 3.5.1.dfsg-2.1ubuntu1.1, plus listed versions
3.5.1-1ubuntu43.5.1.dfsg-2ubuntu13.5.1.dfsg-2ubuntu23.5.1.dfsg-2.1ubuntu1
3.5.1.dfsg-2.1ubuntu1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-7205 is a medium vulnerability (CVSS 6.4) in Nagios, published January 14, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.60%, the 91st percentile. Fixed in nagios3 3.5.1-1ubuntu1.1.

References

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