Mozilla Firefox/Thunderbird 15 Chrome Object Wrapper (COW) InstallTrigger use after free
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.9 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in Mozilla Firefox and Thunderbird 15 (Web Browser). This vulnerability affects the function InstallTrigger of the component Chrome Object Wrapper (COW). The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 does not properly interact with failures of InstallTrigger methods, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted web site, related to an "XrayWrapper pollution" issue.
The weakness was disclosed 10/09/2012 by Mariusz Mlynski (moz_bug_r_a4) as MFSA 2012-83 as confirmed advisory (Website). The advisory is shared for download at mozilla.org. The public release has been coordinated in cooperation with the vendor. This vulnerability was named CVE-2012-3993 since 07/11/2012. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.
A public exploit has been developed in Ruby. It is possible to download the exploit at securityfocus.com. It is declared as highly functional. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 62484 (CentOS 5 / 6 : firefox (CESA-2012:1350)), 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 120583 (Red Hat Update for Xulrunner Firefox (RHSA-2012:1350)).
Upgrading to version 16 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16676.
The vulnerability is also documented in the databases at X-Force (79153), Tenable (62484) and Exploit-DB (41682). The entries 6053, 6636, 6637 and 6639 are pretty similar.
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: 6.5VulDB Meta Temp Score: 5.9
VulDB Base Score: 6.5
VulDB Temp Score: 5.9
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: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | unlock | unlock | unlock | unlock |
|---|---|---|---|---|
| Today | unlock | unlock | unlock | unlock |
Nessus ID: 62484
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:1350)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 72477
OpenVAS Name: FreeBSD Ports: firefox
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
MetaSploit ID: firefox_proto_crmfrequest.rb
MetaSploit Name: Firefox 5.0 - 15.0.1 __exposedProps__ XCS Code Execution
MetaSploit File: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Firefox/Thunderbird 16
Suricata ID: 2021078
Suricata Class: 🔍
Suricata Message: 🔍
TippingPoint: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍
Fortigate IPS: 🔍
Timeline
07/11/2012 🔍10/09/2012 🔍
10/09/2012 🔍
10/09/2012 🔍
10/10/2012 🔍
10/10/2012 🔍
10/10/2012 🔍
10/10/2012 🔍
10/10/2012 🔍
10/11/2012 🔍
10/12/2012 🔍
04/18/2021 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA 2012-83
Researcher: Mariusz Mlynski (moz_bug_r_a4)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍
CVE: CVE-2012-3993 (🔍)
OVAL: 🔍
X-Force: 79153 - Mozilla Firefox, Thunderbird, and SeaMonkey COW privilege escalation, High Risk
SecurityTracker: 1027631 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code, Spoof Information, and Inject Scripting Code
Vulnerability Center: 36466 - Mozilla Firefox, Thunderbird and SeaMonkey COW Implementation Allows Remote Code Execution [1], Critical
SecurityFocus: 56119 - Mozilla Firefox/Thunderbird/Seamonkey CVE-2012-3993 Arbitrary Code Execution Vulnerability
Secunia: 50936 - Mozilla Firefox / Thunderbird Multiple Vulnerabilities, Highly Critical
OSVDB: 86111
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 10/12/2012 12:48Updated: 04/18/2021 08:26
Changes: 10/12/2012 12:48 (98), 01/31/2018 09:53 (13), 04/18/2021 08:26 (3)
Complete: 🔍
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