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ubuntucveUbuntu.comUB:CVE-2021-23988
HistoryMar 25, 2021 - 12:00 a.m.

CVE-2021-23988

2021-03-2500:00:00
ubuntu.com
ubuntu.com
10

6.8 Medium

CVSS2

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

8.8 High

CVSS3

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

0.002 Low

EPSS

Percentile

55.9%

JSON

Mozilla developers reported memory safety bugs present in Firefox 86. 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 < 87.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 87.0+build3-0ubuntu0.18.04.2UNKNOWN
ubuntu20.04noarchfirefox< 87.0+build3-0ubuntu0.20.04.2UNKNOWN
ubuntu20.10noarchfirefox< 87.0+build3-0ubuntu0.20.10.1UNKNOWN
ubuntu21.04noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
ubuntu21.10noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
ubuntu22.04noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
ubuntu22.10noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
ubuntu23.04noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
ubuntu23.10noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
ubuntu24.04noarchfirefox< 87.0+build3-0ubuntu1UNKNOWN
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6.8 Medium

CVSS2

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

8.8 High

CVSS3

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

0.002 Low

EPSS

Percentile

55.9%

JSON
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