10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.0%
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, trick a user into accepting unwanted
permissions, conduct header splitting attacks, conduct spoofing attacks,
bypass security restrictions, confuse the user, or execute arbitrary code.
(CVE-2021-4129, CVE-2021-4140, CVE-2021-29981, CVE-2021-29982,
CVE-2021-29987, CVE-2021-29991, CVE-2021-38495, CVE-2021-38496,
CVE-2021-38497, CVE-2021-38498, CVE-2021-38500, CVE-2021-38501,
CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507,
CVE-2021-38508, CVE-2021-38509, CVE-2021-43534, CVE-2021-43535,
CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539,
CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545,
CVE-2021-43656, CVE-2022-22737, CVE-2022-22738, CVE-2022-22739,
CVE-2022-22740, CVE-2022-22741, CVE-2022-22742, CVE-2022-22743,
CVE-2022-22745, CVE-2022-22747, CVE-2022-22748, CVE-2022-22751)
It was discovered that Thunderbird ignored the configuration to require
STARTTLS for an SMTP connection. A person-in-the-middle could potentially
exploit this to perform a downgrade attack in order to intercept messages
or take control of a session. (CVE-2021-38502)
It was discovered that JavaScript was unexpectedly enabled in the
composition area. An attacker could potentially exploit this in
combination with another vulnerability, with unspecified impacts.
(CVE-2021-43528)
A buffer overflow was discovered in the Matrix chat library bundled with
Thunderbird. An attacker could potentially exploit this to cause a denial
of service, or execute arbitrary code. (CVE-2021-44538)
It was discovered that Thunderbird’s OpenPGP integration only considered
the inner signed message when checking signature validity in a message
that contains an additional outer MIME layer. An attacker could
potentially exploit this to trick the user into thinking that a message
has a valid signature. (CVE-2021-4126)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 20.04 | noarch | thunderbird | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-dbg | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-dev | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-gnome-support | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-gnome-support-dbg | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-locale-af | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-locale-ar | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-locale-ast | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-locale-be | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
Ubuntu | 20.04 | noarch | thunderbird-locale-bg | < 1:91.5.0+build1-0ubuntu0.20.04.1 | UNKNOWN |
ubuntu.com/security/CVE-2021-29981
ubuntu.com/security/CVE-2021-29982
ubuntu.com/security/CVE-2021-29987
ubuntu.com/security/CVE-2021-29991
ubuntu.com/security/CVE-2021-38495
ubuntu.com/security/CVE-2021-38496
ubuntu.com/security/CVE-2021-38497
ubuntu.com/security/CVE-2021-38498
ubuntu.com/security/CVE-2021-38500
ubuntu.com/security/CVE-2021-38501
ubuntu.com/security/CVE-2021-38502
ubuntu.com/security/CVE-2021-38503
ubuntu.com/security/CVE-2021-38504
ubuntu.com/security/CVE-2021-38506
ubuntu.com/security/CVE-2021-38507
ubuntu.com/security/CVE-2021-38508
ubuntu.com/security/CVE-2021-38509
ubuntu.com/security/CVE-2021-4126
ubuntu.com/security/CVE-2021-4129
ubuntu.com/security/CVE-2021-4140
ubuntu.com/security/CVE-2021-43528
ubuntu.com/security/CVE-2021-43534
ubuntu.com/security/CVE-2021-43535
ubuntu.com/security/CVE-2021-43536
ubuntu.com/security/CVE-2021-43537
ubuntu.com/security/CVE-2021-43538
ubuntu.com/security/CVE-2021-43539
ubuntu.com/security/CVE-2021-43541
ubuntu.com/security/CVE-2021-43542
ubuntu.com/security/CVE-2021-43543
ubuntu.com/security/CVE-2021-43545
ubuntu.com/security/CVE-2021-43546
ubuntu.com/security/CVE-2021-44538
ubuntu.com/security/CVE-2022-22737
ubuntu.com/security/CVE-2022-22738
ubuntu.com/security/CVE-2022-22739
ubuntu.com/security/CVE-2022-22740
ubuntu.com/security/CVE-2022-22741
ubuntu.com/security/CVE-2022-22742
ubuntu.com/security/CVE-2022-22743
ubuntu.com/security/CVE-2022-22745
ubuntu.com/security/CVE-2022-22747
ubuntu.com/security/CVE-2022-22748
ubuntu.com/security/CVE-2022-22751
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.0%