SB2018100325 - Ubuntu update for firefox

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Main Vulnerability Database SB2018100325

SB2018100325 - Ubuntu update for firefox

Published: October 3, 2018 Updated: October 30, 2026

Security Bulletin ID SB2018100325
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 67% Medium 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2018-12385)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists within the TransportSecurityInfo function due to insufficient validation of data stored in the local cache in the user profile directory. A remote attacker with ability to write data into local cache (e.g. with combination of another vulnerability) can execute arbitrary code on the target system.


2) Type Confusion (CVE-ID: CVE-2018-12386)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error in register allocation within the JavaScript engine. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error that will allow arbitrary read and write operations within the sandboxed content process.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


3) Off-by-one (CVE-ID: CVE-2018-12387)

CWE-ID: CWE-193 - Off-by-one Error

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to an off-by-one error within the JavaScript JIT compiler when processing Array.prototype.push with multiple arguments. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger an off-by-eight error and execute arbitrary code on the target system inside the sandboxed content process.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References