High severity · published Aug 12, 2020
CVE-2020-12100
In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail…
7.5
CVSS
5.3%
EPSS
No
On KEV
Description
In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail message with deeply nested MIME parts.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.3% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
DO
Dovecot · Dovecot
before 2.3.11.3 · source: NVD
FE
Fedora · Fedoraproject
31; 32; 33 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12100
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12100
Mailing List
http://seclists.org/fulldisclosure/2021/Jan/18
Exploit
http://www.openwall.com/lists/oss-security/2020/08/12/1
Mailing List
http://www.openwall.com/lists/oss-security/2021/01/04/3
Vendor Advisory
https://dovecot.org/security
Mailing List
https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/
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