Vulnerability CVE-2019-19920
Published: 2019-12-22

Description:
sa-exim 4.2.1 allows attackers to execute arbitrary code if they can write a .cf file or a rule. This occurs because Greylisting.pm relies on eval (rather than direct parsing and/or use of the taint feature). This issue is similar to CVE-2018-11805.

Type:

CWE-78

 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') )

CVSS2 => (AV:N/AC:L/Au:S/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9/10
10/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Sa-exim project -> Sa-exim 
Debian -> Debian linux 

 References:
https://bugs.debian.org/946829#24
https://lists.debian.org/debian-lts-announce/2020/01/msg00006.html
https://marc.info/?l=spamassassin-users&m=157668107325768&w=2
https://marc.info/?l=spamassassin-users&m=157668305026635&w=2
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