Mozilla Firefox up to 51.x ASLR/DEP asm.js memory corruption

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

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 51.x. It has been rated as critical. This impacts an unknown function of the file asm.js of the component ASLR/DEP. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2017-5400. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 51.x (Web Browser). It has been classified as critical. This affects an unknown function of the file asm.js of the component ASLR/DEP. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

The bug was discovered 03/07/2017. The weakness was published 03/07/2017 as MFSA 2017-05 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. This vulnerability is uniquely identified as CVE-2017-5400 since 01/13/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 101437 (Virtuozzo 6 : thunderbird (VZLSA-2017-0498)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157398 (Oracle Enterprise Linux Security Update for firefox (ELSA-2017-0461)).

Upgrading to version 52 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 (101437), SecurityFocus (BID 96654†) and SecurityTracker (ID 1037966†). Similar entries are available at VDB-97756, VDB-97757, VDB-97758 and VDB-97759. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: 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: 101437
Nessus Name: Virtuozzo 6 : thunderbird (VZLSA-2017-0498)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for thunderbird CESA-2017:0498 centos7
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 52

Timelineinfo

01/13/2017 🔍
03/07/2017 +53 days 🔍
03/07/2017 +0 days 🔍
03/07/2017 +0 days 🔍
03/07/2017 +0 days 🔍
03/08/2017 +1 days 🔍
03/10/2017 +2 days 🔍
07/13/2017 +125 days 🔍
06/11/2018 +332 days 🔍
11/26/2025 +2725 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2017-05
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5400 (🔍)
GCVE (CVE): GCVE-0-2017-5400
GCVE (VulDB): GCVE-100-97755

OVAL: 🔍

SecurityFocus: 96654 - Mozilla Firefox and Thunderbird CVE-2017-5400 Multiple Memory-Corruption Vulnerabilities
OSVDB: - CVE-2017-5400 - Mozilla - Firefox - Security Bypass Issue
SecurityTracker: 1037966

See also: 🔍

Entryinfo

Created: 03/10/2017 08:14
Updated: 11/26/2025 02:01
Changes: 03/10/2017 08:14 (82), 08/18/2020 11:51 (6), 11/26/2025 02:01 (18)
Complete: 🔍
Cache ID: 216::103

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