6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
thunderbird is vulnerable to denial of service. An attacker is able to prevent a user from sending encrypted email to a correspondent via a malicious OpenPGP key with a subkey that has an invalid self signature.
access.redhat.com/errata/RHSA-2021:1193
access.redhat.com/security/updates/classification/#moderate
bugzilla.mozilla.org/show_bug.cgi?id=1666360
bugzilla.redhat.com/show_bug.cgi?id=1948395
www.mozilla.org/en-US/security/advisories/mfsa2021-13/#CVE-2021-23993
www.mozilla.org/en-US/security/advisories/mfsa2021-13/#CVE-2021-23993
www.mozilla.org/security/advisories/mfsa2021-13/
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N