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ubuntucveUbuntu.comUB:CVE-2018-18500
HistoryJan 30, 2019 - 12:00 a.m.

CVE-2018-18500

2019-01-3000:00:00
ubuntu.com
ubuntu.com
9

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.42 Medium

EPSS

Percentile

97.3%

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.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 65.0+build2-0ubuntu0.18.04.1UNKNOWN
ubuntu18.10noarchfirefox< 65.0+build2-0ubuntu0.18.10.1UNKNOWN
ubuntu19.04noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu19.10noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu20.04noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu20.10noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu21.04noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu21.10noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu22.04noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
ubuntu22.10noarchfirefox< 65.0+build2-0ubuntu1UNKNOWN
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9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.42 Medium

EPSS

Percentile

97.3%