Medium severity · published May 15, 2020
CVE-2020-1758
A flaw was found in Keycloak in versions before 10.0.0, where it does not perform the TLS hostname verification while sending emails using the SMTP server
5.9
CVSS
0.9%
EPSS
No
On KEV
Description
A flaw was found in Keycloak in versions before 10.0.0, where it does not perform the TLS hostname verification while sending emails using the SMTP server. This flaw allows an attacker to perform a man-in-the-middle (MITM) attack.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Keycloak · Redhat
before 10.0.0 · source: NVD
OP
Openstack · Redhat
10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1758
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1758
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1758
Permissions Required
https://issues.redhat.com/browse/KEYCLOAK-13285
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