What is the CVSS score of CVE-2014-1509?

CVE-2014-1509 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.8%.

Is there a public PoC exploit available for CVE-2014-1509?

Yes, a public proof-of-concept exploit is available for CVE-2014-1509. Prioritise patching immediately. EPSS: 0.8%.

Firefox CVE-2014-1509

HIGH

Classic Buffer Overflow (CWE-120)

2014-03-19 security@mozilla.org

RCE Buffer Overflow Red Hat Mozilla Canonical Enterprise Linux Desktop Enterprise Linux Eus Enterprise Linux Server Enterprise Linux Server Aus Enterprise Linux Server Tus Enterprise Linux Workstation Firefox Seamonkey Thunderbird Ubuntu Linux Suse Opensuse Enterprise Linux Server Eus Suse Linux Enterprise Desktop Suse Linux Enterprise Server Suse Linux Enterprise Software Development Kit

8.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-120 ASVS 5.0 V15 - Secure Coding and Architecture Buffer copy size validation MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.81%.
Exploit ScenarioDerived	A remote attacker could overflow a buffer to corrupt adjacent memory by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.8% exploitation probability (EPSS)

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AnalysisAI

Buffer overflow in the _cairo_truetype_index_to_ucs4 function in cairo, as used in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25,. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. Buffer overflow in the _cairo_truetype_index_to_ucs4 function in cairo, as used in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25, allows remote attackers to execute arbitrary code via a crafted extension that renders fonts in a PDF document. Affected products include: Mozilla Firefox, Mozilla Seamonkey, Mozilla Thunderbird, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus. Version information: before 28.0.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Buffer overflow in the _cairo_truetype_index_to_ucs4 function in cairo, as used in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25, allows remote attackers to execute arbitrary code via a crafted extension that renders fonts in a PDF document.

Threat Intelligence Overview

EPSS Score

0.8%

Top 26% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.8%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +44

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_eus:6.5:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_eus:6.5:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_tus:6.5:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*

cpe:2.3:a:suse:suse_linux_enterprise_software_development_kit:11.0:sp3:*:*:*:*:*:*

cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*

cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY http://www.mozilla.org/security/announce/2014/mfsa2014-27.html REF http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00016.html REF http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00017.html REF http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00022.html REF http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00016.html REF http://rhn.redhat.com/errata/RHSA-2014-0310.html REF http://rhn.redhat.com/errata/RHSA-2014-0316.html REF http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html REF http://www.securityfocus.com/bid/66425 REF http://www.ubuntu.com/usn/USN-2151-1 REF https://security.gentoo.org/glsa/201504-01

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