Mozilla Firefox/Thunderbird 24.0 HTML Document ContentIsHostIncludingDescendantOf use after free

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 9.5 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical has been found in Mozilla Firefox and Thunderbird 24.0. This issue affects the function nsContentUtils::ContentIsHostIncludingDescendantOf of the component HTML Document Handler. This manipulation causes use after free.
The identification of this vulnerability is CVE-2013-5603. It is possible to initiate the attack remotely. There is no exploit available.
It is recommended to upgrade the affected component.
Details
A vulnerability was found in Mozilla Firefox and Thunderbird 24.0 (Web Browser). It has been declared as very critical. Affected by this vulnerability is the function nsContentUtils::ContentIsHostIncludingDescendantOf of the component HTML Document Handler. 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, integrity, and availability. The summary by CVE is:
Use-after-free vulnerability in the nsContentUtils::ContentIsHostIncludingDescendantOf function in Mozilla Firefox before 25.0, Firefox ESR 24.x before 24.1, Thunderbird before 24.1, and SeaMonkey before 2.22 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving HTML document templates.
The weakness was shared 10/29/2013 by Abhishek Arya (Inferno) with Google Chrome Security Team as Mozilla Foundation Security Advisory 2013-102 as confirmed advisory (Website). It is possible to read the advisory at mozilla.org. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2013-5603 since 08/26/2013. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 11/25/2025).
The vulnerability scanner Nessus provides a plugin with the ID 70701 (FreeBSD : mozilla -- multiple vulnerabilities (81f866ad-41a4-11e3-a4af-0025905a4771)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195848 (Ubuntu Security Notification for Thunderbird Vulnerabilities (USN-2010-1)).
Upgrading to version 25.0 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.
The vulnerability is also documented in the databases at Tenable (70701), SecurityFocus (BID 63405†), OSVDB (99095†), Secunia (SA55483†) and Vulnerability Center (SBV-42133†). Additional details are provided at mozilla.org. The entries VDB-11047, VDB-11048, VDB-11049 and VDB-11050 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Affected
- Firefox 24.0
- Thunderbird 24.0
- SeaMonkey 2.21
- Firefox ESR 24.0
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: 10.0VulDB Meta Temp Score: 9.5
VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 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: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 70701
Nessus Name: FreeBSD : mozilla -- multiple vulnerabilities (81f866ad-41a4-11e3-a4af-0025905a4771)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 803349
OpenVAS Name: Mozilla Firefox ESR Multiple Vulnerabilities-01 Nov13 (Windows)
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/Thunderbird 25.0
Timeline
08/26/2013 🔍10/29/2013 🔍
10/29/2013 🔍
10/29/2013 🔍
10/29/2013 🔍
10/30/2013 🔍
10/30/2013 🔍
10/30/2013 🔍
11/01/2013 🔍
11/25/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: Mozilla Foundation Security Advisory 2013-102
Researcher: Abhishek Arya (Inferno)
Organization: Google Chrome Security Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍
CVE: CVE-2013-5603 (🔍)
GCVE (CVE): GCVE-0-2013-5603
GCVE (VulDB): GCVE-100-11059
OVAL: 🔍
IAVM: 🔍
SecurityFocus: 63405
Secunia: 55483 - Ubuntu update for firefox, Highly Critical
OSVDB: 99095
Vulnerability Center: 42133 - Mozilla Firefox, Thunderbird and Seamonkey Remote Code Execution and DoS During Interaction with HTML Document Templates (CVE-2013-5603), Critical
Misc.: 🔍
See also: 🔍
Entry
Created: 11/01/2013 10:47Updated: 11/25/2025 19:51
Changes: 11/01/2013 10:47 (90), 01/31/2018 09:54 (1), 06/01/2021 15:31 (3), 06/01/2021 15:37 (1), 11/25/2025 19:51 (15)
Complete: 🔍
Committer:
Cache ID: 216:DBB:103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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