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CVE
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CVE-2020-8794Date: (C)2020-02-26   (M)2020-03-17


OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 9.8CVSS Score : 10.0
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
http://seclists.org/fulldisclosure/2020/Feb/32
DSA-4634
http://www.openwall.com/lists/oss-security/2020/02/26/1
http://www.openwall.com/lists/oss-security/2020/03/01/2
https://www.openbsd.org/security.html
https://www.openwall.com/lists/oss-security/2020/02/24/5

CPE    1
cpe:/a:opensmtpd:opensmtpd
CWE    1
CWE-125
OVAL    4
oval:org.secpod.oval:def:705399
oval:org.secpod.oval:def:604763
oval:org.secpod.oval:def:62013
oval:org.secpod.oval:def:62034
...

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