CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.7 | $0-$5k | 0.00 |
A vulnerability was found in Mozilla Firefox 39 (Web Browser). It has been rated as critical. This issue affects the function XMLHttpRequest::Open
. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.
The weakness was published 08/11/2015 by Looben Yang as MFSA 2015-92 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. The identification of this vulnerability is CVE-2015-4492 since 06/10/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/09/2022).
The vulnerability scanner Nessus provides a plugin with the ID 85336 (CentOS 5 / 6 / 7 : firefox (CESA-2015:1586)), 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 123849 (CentOS Security Update for firefox Security Update (CESA-2015:1586)).
Upgrading to version 40 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at X-Force (105521) and Tenable (85336). Similar entries are available at 76999, 77001, 77077 and 77078.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 10.0VulDB Meta Temp Score: 8.7
VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 85336
Nessus Name: CentOS 5 / 6 / 7 : firefox (CESA-2015:1586)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 703333
OpenVAS Name: Debian Security Advisory DSA 3333-1 (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 40
Timeline
06/10/2015 🔍08/11/2015 🔍
08/11/2015 🔍
08/11/2015 🔍
08/11/2015 🔍
08/12/2015 🔍
08/13/2015 🔍
08/15/2015 🔍
06/09/2022 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA 2015-92
Researcher: Looben Yang
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2015-4492 (🔍)
OVAL: 🔍
X-Force: 105521 - Mozilla Firefox XMLHttpRequest code execution
SecurityTracker: 1033247
Vulnerability Center: 51937 - Mozilla Firefox <40, Firefox ESR 38.2 Remote DoS Vulnerability in XMLHttpRequest, High
SecurityFocus: 76297 - Mozilla Firefox CVE-2015-4492 Use After Free Memory Corruption Vulnerability
See also: 🔍
Entry
Created: 08/13/2015 11:13Updated: 06/09/2022 12:07
Changes: 08/13/2015 11:13 (67), 10/08/2017 09:41 (11), 06/09/2022 12:00 (3), 06/09/2022 12:07 (1)
Complete: 🔍
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