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ubuntucveUbuntu.comUB:CVE-2021-38501
HistoryNov 03, 2021 - 12:00 a.m.

CVE-2021-38501

2021-11-0300:00:00
ubuntu.com
ubuntu.com
17
mozilla
memory corruption
exploitation
firefox
thunderbird
vulnerability

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.003

Percentile

71.5%

JSON

Mozilla developers reported memory safety bugs present in Firefox 92 and
Firefox ESR 91.1. Some of these bugs showed evidence of memory corruption
and we presume that with enough effort some of these could have been
exploited to run arbitrary code. 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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CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.003

Percentile

71.5%

JSON
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