Mozilla Firefox up to 54 Window Resizing use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 54. This vulnerability affects unknown code of the component Window Resizing. The manipulation leads to use after free. This vulnerability is documented as CVE-2017-7801. 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 up to 54 (Web Browser) and classified as critical. This issue affects some unknown processing of the component Window Resizing. 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 bug was discovered 08/08/2017. The weakness was released 08/08/2017 by Nils as MFSA 2017-18 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. The identification of this vulnerability is CVE-2017-7801 since 04/12/2017. 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. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 102882 (CentOS 6 / 7 : thunderbird (CESA-2017:2534)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236453 (Red Hat Update for firefox (RHSA-2017:2456)).

Upgrading to version 55 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 Tenable (102882), SecurityFocus (BID 100197†) and SecurityTracker (ID 1039124†). Entries connected to this vulnerability are available at VDB-105249, VDB-105250, VDB-105252 and VDB-105253. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: 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: 🔍

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Nessus ID: 102882
Nessus Name: CentOS 6 / 7 : thunderbird (CESA-2017:2534)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703926
OpenVAS Name: Debian Security Advisory DSA 3928-1 (firefox-esr - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Firefox 55

Timelineinfo

04/12/2017 🔍
08/08/2017 +118 days 🔍
08/08/2017 +0 days 🔍
08/08/2017 +0 days 🔍
08/08/2017 +0 days 🔍
08/10/2017 +2 days 🔍
08/12/2017 +2 days 🔍
09/01/2017 +20 days 🔍
06/11/2018 +282 days 🔍
11/26/2025 +2725 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2017-18
Researcher: Nils (Nils)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-7801 (🔍)
GCVE (CVE): GCVE-0-2017-7801
GCVE (VulDB): GCVE-100-105251

OVAL: 🔍

SecurityFocus: 100197 - Mozilla Firefox CVE-2017-7801 Use After Free Remote Code Execution Vulnerability
SecurityTracker: 1039124

See also: 🔍

Entryinfo

Created: 08/13/2017 00:07
Updated: 11/26/2025 06:09
Changes: 08/13/2017 00:07 (81), 11/06/2019 15:17 (6), 01/09/2021 08:01 (2), 01/09/2021 08:07 (1), 11/26/2025 06:09 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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