Mozilla Firefox up to 54 Cached Style Data out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 54. It has been declared as critical. Affected is an unknown function of the component Cached Style Data Handler. The manipulation results in out-of-bounds. This vulnerability was named CVE-2017-7753. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 54 (Web Browser). Affected is some unknown processing of the component Cached Style Data Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

The bug was discovered 08/08/2017. The weakness was presented 08/08/2017 as MFSA 2017-18 as confirmed security advisory (Website). The advisory is available at mozilla.org. This vulnerability is traded as CVE-2017-7753 since 04/12/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not 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 100315†) and SecurityTracker (ID 1039124†). See VDB-105249, VDB-105250, VDB-105251 and VDB-105252 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

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

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: SkyLined
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-7753 (🔍)
GCVE (CVE): GCVE-0-2017-7753
GCVE (VulDB): GCVE-100-105258

OVAL: 🔍

SecurityFocus: 100315 - Mozilla Firefox CVE-2017-7753 Information Disclosure Vulnerability
SecurityTracker: 1039124

See also: 🔍

Entryinfo

Created: 08/13/2017 00:07
Updated: 11/26/2025 04:37
Changes: 08/13/2017 00:07 (82), 11/06/2019 15:38 (5), 01/09/2021 08:51 (3), 11/26/2025 04:37 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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