CVE-2018-18500

CWE-416 — Use After Free11 documents8 sources
Severity
9.8CRITICAL
EPSS
28.2%
top 3.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
11
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+8 more
Timeline
PublishedFeb 5
Latest updateMay 14

Description

A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages10 packages

▶NVDmozilla/firefox< 65.0
▶Ubuntufirefox< 65.0+build2-0ubuntu0.14.04.1+2
▶Debianfirefox-esr< 60.5.0esr-1+3

Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 18.10, Enterprise Linux 7.6

🔴Vulnerability Details

5
GHSA
GHSA-6hxm-h9g7-cg3m: A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements↗2022-05-14
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OSV
thunderbird vulnerabilities↗2019-02-26
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CVEList
CVE-2018-18500: A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements↗2019-02-05
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OSV
CVE-2018-18500: A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements↗2019-02-05
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OSV
firefox vulnerabilities↗2019-01-30
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📋Vendor Advisories

4
Ubuntu
Thunderbird vulnerabilities↗2019-02-26
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Ubuntu
Firefox vulnerabilities↗2019-01-30
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Red Hat
Mozilla: Use-after-free parsing HTML5 stream↗2019-01-29
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Debian
CVE-2018-18500: firefox - A use-after-free vulnerability can occur while parsing an HTML5 stream in concer...↗2018
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💬Community

1
Bugzilla
CVE-2018-18500 Mozilla: Use-after-free parsing HTML5 stream↗2019-01-29
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CVE-2018-18500 (CRITICAL CVSS 9.8) | A use-after-free vulnerability can | cvebase.io