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Ubuntu.comUB:CVE-2021-23999
HistoryApr 19, 2021 - 12:00 a.m.

CVE-2021-23999

2021-04-1900:00:00
ubuntu.com
ubuntu.com
8

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.003 Low

EPSS

Percentile

69.3%

If a Blob URL was loaded through some unusual user interaction, it could
have been loaded by the System Principal and granted additional privileges
that should not be granted to web content. This vulnerability affects
Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchfirefox< 88.0+build2-0ubuntu0.20.04.1UNKNOWN
ubuntu20.10noarchfirefox< 88.0+build2-0ubuntu0.20.10.1UNKNOWN
ubuntu21.04noarchfirefox< 88.0+build2-0ubuntu0.21.04.1UNKNOWN
ubuntu21.10noarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntu22.04noarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntuupstreamnoarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntuupstreamnoarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntuupstreamnoarchfirefox< 88UNKNOWN
ubuntu16.04noarchfirefox< 88.0+build2-0ubuntu0.16.04.1UNKNOWN
ubuntuupstreamnoarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
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API usage cases
  • Network scanning
  • Linux Patch management
  • Threat protection
  • No network audit solution

Ways of integration

Integrate Vulners API

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.003 Low

EPSS

Percentile

69.3%

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