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ubuntuUbuntuUSN-4936-1
HistoryMay 06, 2021 - 12:00 a.m.

Thunderbird vulnerabilities

2021-05-0600:00:00
ubuntu.com
98

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

8.5 High

AI Score

Confidence

High

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

0.009 Low

EPSS

Percentile

82.3%

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS

Packages

  • thunderbird - Mozilla Open Source mail and newsgroup client

Details

Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, or execute arbitrary code. (CVE-2021-23968,
CVE-2021-23969, CVE-2021-23973, CVE-2021-23978)

It was discovered that Thunderbird may keep key material in memory in some
circumstances. A local attacker could potentially exploit this to obtain
private keys. (CVE-2021-29950)

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchthunderbird< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-dbg< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-dev< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-gnome-support< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-gnome-support-dbg< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-locale-af< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-locale-ar< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-locale-ast< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-locale-be< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Ubuntu20.10noarchthunderbird-locale-bg< 1:78.8.1+build1-0ubuntu0.20.10.1UNKNOWN
Rows per page:
1-10 of 1801

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

8.5 High

AI Score

Confidence

High

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

0.009 Low

EPSS

Percentile

82.3%