Mozilla Firefox ESR/Thunderbird up to 45.5 EnumerateSubDocuments Document access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Mozilla Firefox ESR and Thunderbird up to 45.5. This issue affects the function EnumerateSubDocuments. The manipulation as part of Document leads to access control. This vulnerability is documented as CVE-2016-9905. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox ESR and Thunderbird up to 45.5 (Web Browser). It has been rated as problematic. This issue affects the function EnumerateSubDocuments. The manipulation as part of a Document leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is availability. The summary by CVE is:

A potentially exploitable crash in "EnumerateSubDocuments" while adding or removing sub-documents. This vulnerability affects Firefox ESR < 45.6 and Thunderbird < 45.6.

The bug was discovered 12/13/2016. The weakness was released 06/11/2018 as Bug 1293985 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2016-9905 since 12/07/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 545 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 900006 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236208 (Red Hat Update Firefox Security (RHSA-2016:2946)).

Upgrading to version 45.6 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (900006) and SecurityFocus (BID 94884†). Entries connected to this vulnerability are available at VDB-94490, VDB-94491, VDB-94493 and VDB-94494. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 900006
Nessus File: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for thunderbird CESA-2016:2973 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox ESR/Thunderbird 45.6

Timelineinfo

12/07/2016 🔍
12/13/2016 +6 days 🔍
12/13/2016 +0 days 🔍
06/11/2018 +544 days 🔍
06/11/2018 +0 days 🔍
06/12/2018 +1 days 🔍
11/25/2025 +2723 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1293985
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9905 (🔍)
GCVE (CVE): GCVE-0-2016-9905
GCVE (VulDB): GCVE-100-119321

OVAL: 🔍

SecurityFocus: 94884 - Mozilla Firefox ESR CVE-2016-9905 Denial of Service Vulnerability
SecurityTracker: 1037462

See also: 🔍

Entryinfo

Created: 06/12/2018 08:44
Updated: 11/25/2025 23:18
Changes: 06/12/2018 08:44 (74), 02/17/2020 17:16 (4), 06/25/2021 11:43 (4), 03/22/2023 11:53 (3), 11/25/2025 23:18 (17)
Complete: 🔍
Cache ID: 216:781:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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