Mozilla Firefox up to 60 SSSE3 integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Mozilla Firefox up to 60 (Web Browser) and classified as critical. This issue affects an unknown code of the component SSSE3. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability.

The bug was discovered 06/26/2018. The weakness was disclosed 06/26/2018 by Abdulrahman Alqabandi (OSS-Fuzz) as MFSA 2018-15 as confirmed security advisory (Website). It is possible to read the advisory at The identification of this vulnerability is CVE-2018-12362 since 06/14/2018. 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/29/2023).

The vulnerability scanner Nessus provides a plugin with the ID 111980 (Mozilla Thunderbird < 60.0 Multiple Vulnerabilities (macOS)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351350 (Amazon Linux Security Advisory for thunderbird: ALAS2-2018-1061).

Upgrading to version 61 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111980). The entries 120044, 120045, 120046 and 120048 are pretty similar.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
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NVD Base Score: 8.8
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Class: Integer overflow
CWE: CWE-190 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍


Nessus ID: 111980
Nessus Name: Mozilla Thunderbird < 60.0 Multiple Vulnerabilities (macOS)
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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Upgrade: Firefox 61


06/14/2018 🔍
06/26/2018 +12 days 🔍
06/26/2018 +0 days 🔍
06/26/2018 +0 days 🔍
06/26/2018 +0 days 🔍
06/27/2018 +1 days 🔍
06/28/2018 +1 days 🔍
08/20/2018 +53 days 🔍
10/18/2018 +59 days 🔍
03/29/2023 +1623 days 🔍



Advisory: MFSA 2018-15
Researcher: Abdulrahman Alqabandi (OSS-Fuzz)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-12362 (🔍)

SecurityTracker: 1041193
SecurityFocus: 104560 - Mozilla Firefox and Firefox ESR Multiple Security Vulnerabilities

See also: 🔍


Created: 06/28/2018 09:11 AM
Updated: 03/29/2023 10:35 AM
Changes: 06/28/2018 09:11 AM (76), 02/23/2020 03:39 PM (10), 03/29/2023 10:35 AM (4)
Complete: 🔍


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