| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 8.3 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Mozilla Firefox 27.0. It has been rated as critical. This affects an unknown part of the file jsinfer.cpp. Performing a manipulation results in resource management. This vulnerability was named CVE-2014-1512. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.
Details
A vulnerability classified as critical has been found in Mozilla Firefox 27.0 (Web Browser). This affects an unknown function of the file jsinfer.cpp. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
Use-after-free vulnerability in the TypeObject class in the JavaScript engine 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 by triggering extensive memory consumption while garbage collection is occurring, as demonstrated by improper handling of BumpChunk objects.
The weakness was presented 03/18/2014 with VUPEN as MFSA2014-30 as confirmed advisory (Website) via Pwn2Own Contest. It is possible to read the advisory at mozilla.org. This vulnerability is uniquely identified as CVE-2014-1512 since 01/16/2014. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.
The vulnerability scanner Nessus provides a plugin with the ID 73084 (CentOS 5 / 6 : firefox (CESA-2014:0310)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121853 (Red Hat Update for Xulrunner Firefox (RHSA-2014:0310)). The advisory illustrates:
In general this flaw cannot be exploited through email in the Thunderbird and Seamonkey products because scripting is disabled, but is potentially a risk in browser or browser-like contexts.
Upgrading to version 28 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
Fixed in: Firefox 28, Firefox ESR 24.4, Thunderbird 24.4, Seamonkey 2.25Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13739.
The vulnerability is also documented in the databases at X-Force (91877), Tenable (73084), SecurityFocus (BID 66209†), SecurityTracker (ID 1029928†) and Vulnerability Center (SBV-43626†). Further details are available at bugzilla.mozilla.org. See VDB-12646, VDB-12647, VDB-12648 and VDB-12649 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.
Affected
- Mozilla Firefox 27.0
- Mozilla Firefox ESR 24.3
- Mozilla Seamonkey 2.24
- Mozilla Thunderbird 24.3.0
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.mozilla.org/
- Product: https://www.mozilla.org/en-US/firefox/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.6VulDB Meta Temp Score: 8.3
VulDB Base Score: 9.6
VulDB Temp Score: 8.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 73084
Nessus Name: CentOS 5 / 6 : firefox (CESA-2014:0310)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 702881
OpenVAS Name: Debian Security Advisory DSA 2881-1 (iceweasel - security update
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Firefox 28
TippingPoint: 🔍
Fortigate IPS: 🔍
Timeline
01/16/2014 🔍03/13/2014 🔍
03/13/2014 🔍
03/16/2014 🔍
03/18/2014 🔍
03/18/2014 🔍
03/19/2014 🔍
03/19/2014 🔍
03/20/2014 🔍
11/25/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA2014-30
Organization: VUPEN
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2014-1512 (🔍)
GCVE (CVE): GCVE-0-2014-1512
GCVE (VulDB): GCVE-100-12663
OVAL: 🔍
IAVM: 🔍
X-Force: 91877 - Mozilla Firefox,Thunderbird and SeaMonkey jsinfer.cpp code execution, High Risk
SecurityFocus: 66209
SecurityTracker: 1029928 - Mozilla Firefox Multiple Bugs Let Local Users Gain Elevated Privileges and Remote Users Execute Arbitrary Code, Deny Service, and Obtain Information
Vulnerability Center: 43626 - Mozilla Firefox, Firefox ESR, Thunderbird and SeaMonkey Remote Code Execution via TypeObject Class - CVE-2014-1512, Critical
Misc.: 🔍
See also: 🔍
Entry
Created: 03/20/2014 12:07Updated: 11/25/2025 21:04
Changes: 03/20/2014 12:07 (86), 01/31/2018 09:55 (6), 06/16/2021 08:08 (4), 06/16/2021 08:13 (1), 11/25/2025 21:04 (17)
Complete: 🔍
Cache ID: 216:EAF:103
Be aware that VulDB is the high quality source for vulnerability data.

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