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ubuntucveUbuntu.comUB:CVE-2021-29976
HistoryJul 14, 2021 - 12:00 a.m.

CVE-2021-29976

2021-07-1400:00:00
ubuntu.com
ubuntu.com
24

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

0.004 Low

EPSS

Percentile

74.2%

JSON

Mozilla developers reported memory safety bugs present in code shared
between Firefox and Thunderbird. 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
Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 90.0+build1-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchfirefox< 90.0+build1-0ubuntu0.20.04.1UNKNOWN
ubuntu20.10noarchfirefox< 90.0+build1-0ubuntu0.20.10.1UNKNOWN
ubuntu21.04noarchfirefox< 90.0+build1-0ubuntu0.21.04.1UNKNOWN
ubuntu21.10noarchfirefox< 90.0+build1-0ubuntu1UNKNOWN
ubuntu22.04noarchfirefox< 90.0+build1-0ubuntu1UNKNOWN
ubuntu22.10noarchfirefox< 90.0+build1-0ubuntu1UNKNOWN
ubuntu23.04noarchfirefox< 90.0+build1-0ubuntu1UNKNOWN
ubuntu23.10noarchfirefox< 90.0+build1-0ubuntu1UNKNOWN
ubuntu18.04noarchmozjs38< anyUNKNOWN
Rows per page:
1-10 of 221

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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

0.004 Low

EPSS

Percentile

74.2%

JSON
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