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ubuntucveUbuntu.comUB:CVE-2021-38498
HistoryNov 03, 2021 - 12:00 a.m.

CVE-2021-38498

2021-11-0300:00:00
ubuntu.com
ubuntu.com
16
use-after-free memory
mozilla
javascript engine

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.003

Percentile

66.5%

JSON

During process shutdown, a document could have caused a use-after-free of a
languages service object, leading to memory corruption and a potentially
exploitable crash. This vulnerability affects Firefox < 93, Thunderbird <
91.2, and Firefox ESR < 91.2.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 93.0+build1-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchfirefox< 93.0+build1-0ubuntu0.20.04.1UNKNOWN
ubuntu21.04noarchfirefox< 93.0+build1-0ubuntu0.21.04.1UNKNOWN
ubuntu21.10noarchfirefox< 93.0+build1-0ubuntu2UNKNOWN
ubuntu22.04noarchfirefox< 93.0+build1-0ubuntu2UNKNOWN
ubuntu22.10noarchfirefox< 93.0+build1-0ubuntu2UNKNOWN
ubuntu23.04noarchfirefox< 93.0+build1-0ubuntu2UNKNOWN
ubuntu23.10noarchfirefox< 93.0+build1-0ubuntu2UNKNOWN
ubuntu24.04noarchfirefox< 93.0+build1-0ubuntu2UNKNOWN
ubuntu18.04noarchmozjs38< anyUNKNOWN
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1-10 of 221

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CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.003

Percentile

66.5%

JSON
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