Critical severity · published Jul 23, 2020
CVE-2020-15917
common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled
9.8
CVSS
2.6%
EPSS
No
On KEV
Description
common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.6% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BS
Backports Sle · Opensuse
15.0; 15.0 · source: NVD
CL
Claws-mail · Claws-mail
before 3.17.6 · source: NVD
FE
Fedora · Fedoraproject
31; 32 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15917
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15917
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00090.html
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00002.html
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00060.html
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00051.html
Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00013.html
git.claws-mail.org
https://git.claws-mail.org/?p=claws.git%3Ba=blob%3Bf=RELEASE_NOTES
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