Executive Summary

Summary
Title Firefox vulnerabilities
Informations
Name USN-3874-1 First vendor Publication 2019-01-30
Vendor Ubuntu Last vendor Modification 2019-01-30
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

Firefox could be made to crash or run programs as your login if it opened a malicious website.

Software Description: - firefox: Mozilla Open Source web browser

Details:

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, gain additional privileges by escaping the sandbox, or execute arbitrary code. (CVE-2018-18500, CVE-2018-18501, CVE-2018-18502, CVE-2018-18503, CVE-2018-18504, CVE-2018-18505)

It was discovered that Firefox allowed PAC files to specify that requests to localhost are sent through the proxy to another server. If proxy auto-detection is enabled, an attacker could potentially exploit this to conduct attacks on local services and tools. (CVE-2018-18506)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10: テつ firefoxテつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ 65.0+build2-0ubuntu0.18.10.1

Ubuntu 18.04 LTS: テつ firefoxテつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ 65.0+build2-0ubuntu0.18.04.1

Ubuntu 16.04 LTS: テつ firefoxテつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ 65.0+build2-0ubuntu0.16.04.1

Ubuntu 14.04 LTS: テつ firefoxテつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ 65.0+build2-0ubuntu0.14.04.1

After a standard system update you need to restart Firefox to make all the necessary changes.

References: テつ https://usn.ubuntu.com/usn/usn-3874-1 テつ CVE-2018-18500, CVE-2018-18501, CVE-2018-18502, CVE-2018-18503, テつ CVE-2018-18504, CVE-2018-18505, CVE-2018-18506

Package Information: テつ https://launchpad.net/ubuntu/+source/firefox/65.0+build2-0ubuntu0.18.10.1 テつ https://launchpad.net/ubuntu/+source/firefox/65.0+build2-0ubuntu0.18.04.1 テつ https://launchpad.net/ubuntu/+source/firefox/65.0+build2-0ubuntu0.16.04.1 テつ https://launchpad.net/ubuntu/+source/firefox/65.0+build2-0ubuntu0.14.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-3874-1

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer
17 % CWE-416 Use After Free
17 % CWE-287 Improper Authentication
17 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 530
Application 126
Application 397
Os 4
Os 2
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 2

Snortツョ IPS/IDS

Date Description
2019-10-08 Mozilla Firefox Custom Elements write-after-free attempt
RuleID : 51440 - Revision : 1 - Type : BROWSER-FIREFOX
2019-10-08 Mozilla Firefox Custom Elements write-after-free attempt
RuleID : 51439 - Revision : 1 - Type : BROWSER-FIREFOX

Alert History

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0
1
2
Date Informations
2019-02-23 09:21:41
  • Multiple Updates
2019-02-06 17:21:34
  • Multiple Updates
2019-01-31 05:18:39
  • First insertion