Multiple off-by-one errors in Nagios Core 3.5.1, 4.0.2, and earlier, and Icinga before 1.8.5, 1.9 before 1.9.4, and 1.10 before 1.10.2 allow
Multiple off-by-one errors in Nagios Core 3.5.1, 4.0.2, and earlier, and Icinga before 1.8.5, 1.9 before 1.9.4, and 1.10 before 1.10.2 allow 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 to the process_cgivars function in (1) avail.c, (2) cmd.c, (3) config.c, (4) extinfo.c, (5) histogram.c, (6) notifications.c, (7) outages.c, (8) status.c, (9) statusmap.c, (10) summary.c, and (11) trends.c in cgi/, which triggers a heap-based buffer over-read.
- Published
- Jan 15, 2014
- Updated
- Jun 16, 2026
- EPSS
- 59.5% · 99th percentile
- CWE
- CWE-20
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 18 / 30 · 59.5%
Affected systems
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- icinga icingaup to 1.8.4 inclusive
- icinga icinga0.8.0
- icinga icinga0.8.1
- icinga icinga0.8.2
- icinga icinga0.8.3
- icinga icinga0.8.4
- icinga icinga1.0
- icinga icinga1.0.1
- icinga icinga1.0.2
- icinga icinga1.0.3
- icinga icinga1.10.0
- icinga icinga1.10.1
- icinga icinga1.2.0
- icinga icinga1.2.1
- icinga icinga1.3.0
- icinga icinga1.3.1
- icinga icinga1.4.0
- icinga icinga1.4.1
- icinga icinga1.6.0
- icinga icinga1.6.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:6.0 | icinga | before 1.0.2-2+squeeze2 | 1.0.2-2+squeeze2 |
| Debian:7 | icinga | before 1.7.1-7 | 1.7.1-7 |
| Debian:8 | nagios3 | before 3.5.1.dfsg-2+deb8u1 | 3.5.1.dfsg-2+deb8u1 |
| openSUSE:Tumbleweed | nagios | before 4.4.6-2.5 | 4.4.6-2.5 |
Same product
nagios: all recordsOther highest-scoring records for the same primary product.
- CVE-2009-2288statuswml.cgi in Nagios before 3.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) ping or (2) T55Plan
- CVE-2012-6096Multiple stack-based buffer overflows in the get_history function in history.cgi in Nagios Core before 3.4.4, and Icinga 1.6.x before 1.6.2,50Plan
- CVE-2016-9565MagpieRSS, as used in the front-end component in Nagios Core before 4.2.2 might allow remote attackers to read or write to arbitrary files b46Plan
- CVE-2002-1959Nagios 1.0b1 through 1.0b3 allows remote attackers to execute arbitrary commands via shell metacharacters in plugin output.41Plan
- CVE-2016-0726The Fedora Nagios package uses "nagiosadmin" as the default password for the "nagiosadmin" administrator account, which makes it easier for 40Plan
- CVE-2020-6585Nagios Log Server 2.1.3 has CSRF.35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:icinga | 1.0.2-2+squeeze2 · Debian:6.0 | Package registry (OSV) |
| debian:nagios3 | 3.5.1.dfsg-2+deb8u1 · Debian:8 | Package registry (OSV) |
| opensuse:nagios | 4.4.6-2.5 · openSUSE:Tumbleweed | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2013-12-16 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-31 d
- Published
- TodaySep 30, 2026+4641 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
AV:N/AC:L/Au:S/C:P/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- lists.opensuse.org/opensuse-updates/2014-01/msg00010.html
- lists.opensuse.org/opensuse-updates/2014-01/msg00028.html
- lists.opensuse.org/opensuse-updates/2014-01/msg00046.html
- lists.opensuse.org/opensuse-updates/2014-01/msg00068.html
- secunia.com/advisories/55976
- secunia.com/advisories/56316
- sourceforge.net/p/nagios/nagioscore/ci/d97e03f32741a7d851826b03ed73ff4c9612a866/
- www.mandriva.com/security/advisories?name=MDVSA-2014:004
- www.openwall.com/lists/oss-security/2013/12/24/1
- www.securityfocus.com/bid/64363
- dev.icinga.org/issues/5251
- lists.debian.org/debian-lts-announce/2018/12/msg00014.html
- www.icinga.org/2013/12/17/icinga-security-releases-1-10-2-1-9-4-1-8-5/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.