Mozilla Firefox up to 62.0.2 JIT Compiler input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability has been found in Mozilla Firefox up to 62.0.2 (Web Browser) and classified as critical. This vulnerability affects an unknown functionality of the component JIT Compiler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

The bug was discovered 10/02/2018. The weakness was published 10/18/2018 as Bug 1493903 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.mozilla.org. This vulnerability was named CVE-2018-12387 since 06/14/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/30/2023).

The vulnerability scanner Nessus provides a plugin with the ID 117894 (GLSA-201810-01 : Mozilla Firefox: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157814 (Oracle Enterprise Linux Security Update for firefox (ELSA-2018-2884)).

Upgrading to version 62.0.3 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117894). Similar entries are available at 120051, 120053, 120058 and 120059.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117894
Nessus Name: GLSA-201810-01 : Mozilla Firefox: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 62.0.3

Timelineinfo

06/14/2018 🔍
10/02/2018 +110 days 🔍
10/02/2018 +0 days 🔍
10/02/2018 +0 days 🔍
10/03/2018 +1 days 🔍
10/18/2018 +14 days 🔍
10/18/2018 +0 days 🔍
10/19/2018 +1 days 🔍
05/30/2023 +1684 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1493903
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-12387 (🔍)
OVAL: 🔍

SecurityTracker: 1041770
SecurityFocus: 105460 - Mozilla Firefox and Firefox ESR Remote Code Execution and Information Disclosure Vulnerabilities

See also: 🔍

Entryinfo

Created: 10/19/2018 06:48
Updated: 05/30/2023 11:17
Changes: 10/19/2018 06:48 (76), 04/05/2020 14:26 (5), 05/30/2023 11:17 (4)
Complete: 🔍

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