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ubuntucveUbuntu.comUB:CVE-2021-29946
HistoryApr 22, 2021 - 12:00 a.m.

CVE-2021-29946

2021-04-2200:00:00
ubuntu.com
ubuntu.com
12

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

68.3%

JSON

Ports that were written as an integer overflow above the bounds of a 16-bit
integer could have bypassed port blocking restrictions when used in the
Alt-Svc header. 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
ubuntu18.04noarchfirefox< 88.0+build2-0ubuntu0.18.04.2UNKNOWN
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
ubuntu22.10noarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntu23.04noarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntu23.10noarchfirefox< 88.0.1+build1-0ubuntu2UNKNOWN
ubuntu16.04noarchfirefox< 88.0+build2-0ubuntu0.16.04.1UNKNOWN
Rows per page:
1-10 of 241

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Security Vulnerabilities fixed in Firefox ESR 78.10 — Mozilla
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(RHSA-2021:1362) Important: firefox security update
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Security update for MozillaFirefox (important)
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Security fix for the ALT Linux 10 package firefox-esr version 78.10.0-alt1
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Important: thunderbird
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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

68.3%

JSON
Related for UB:CVE-2021-29946
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