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CVE-2014-8684

CWE-310Published: September 19, 2017· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

CodeIgniter before 3.0 and Kohana 3.2.3 and earlier and 3.3.x through 3.3.2 make it easier for remote attackers to spoof session cookies and consequently conduct PHP object injection attacks by leveraging use of standard string comparison operators to compare cryptographic hashes.

Technical Analysis

CVE-2014-8684 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2014-8684. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

codeigniter1 product(s)

codeigniter

kohanaframework1 product(s)

kohana

Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.html

ADVISORYhttp://seclists.org/fulldisclosure/2014/May/54

ADVISORYhttps://github.com/kohana/core/pull/492

ADVISORYhttps://scott.arciszewski.me/research/full/php-framework-timing-attacks-object-injection

ADVISORYhttp://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.html

ADVISORYhttp://seclists.org/fulldisclosure/2014/May/54

ADVISORYhttps://github.com/kohana/core/pull/492

ADVISORYhttps://scott.arciszewski.me/research/full/php-framework-timing-attacks-object-injection

All References (8)

→

http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.htmlThird Party Advisory · VDB Entry

→

http://seclists.org/fulldisclosure/2014/May/54Mailing List · Third Party Advisory

→

https://github.com/kohana/core/pull/492Third Party Advisory

→

https://scott.arciszewski.me/research/full/php-framework-timing-attacks-object-injectionThird Party Advisory

→

http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.htmlThird Party Advisory · VDB Entry

→

http://seclists.org/fulldisclosure/2014/May/54Mailing List · Third Party Advisory

→

https://github.com/kohana/core/pull/492Third Party Advisory

→

https://scott.arciszewski.me/research/full/php-framework-timing-attacks-object-injectionThird Party Advisory

Quick Facts

CVE IDCVE-2014-8684

CVSS Score9.8 / 10

SeverityCRITICAL

WeaknessCWE-310

CISA KEVNo

ExploitPOC

Affected2 vendor(s)

PublishedSep 19, 2017

Related CVEs (CWE-310)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2014-8684 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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