Medium severity · published Aug 10, 2021
CVE-2021-38373
In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless "Server requires authentication" is checked
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless "Server requires authentication" is checked.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KM
Kmail · Kde
19.12.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-38373
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-38373
Mailing List
https://bugs.kde.org/show_bug.cgi?id=423423
Third Party Advisory
https://nostarttls.secvuln.info
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