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cve[email protected]CVE-2020-28200
HistoryJun 28, 2021 - 1:15 p.m.

CVE-2020-28200

2021-06-2813:15:12
CWE-770
web.nvd.nist.gov
110
dovecot
cve-2020-28200
sieve engine
uncontrolled resource consumption
nvd

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

4.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.2%

The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.

Affected configurations

NVD
Node
dovecotdovecotRange<2.3.15
Node
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
CPENameOperatorVersion
dovecot:dovecotdovecotlt2.3.15

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

4.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.2%