CVE-2020-28022

2021-05-0400:00:00

ubuntu.com

exim 4.94.2

memory buffer

write operations

mail from

rcpt to

unix

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.002

Percentile

60.7%

JSON

Exim 4 before 4.94.2 has Improper Restriction of Write Operations within
the Bounds of a Memory Buffer. This occurs when processing name=value pairs
within MAIL FROM and RCPT TO commands.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchexim4< 4.90.1-1ubuntu1.8UNKNOWN
ubuntu20.04noarchexim4< 4.93-13ubuntu1.5UNKNOWN
ubuntu20.10noarchexim4< 4.94-7ubuntu1.2UNKNOWN
ubuntu21.04noarchexim4< 4.94-15ubuntu1.2UNKNOWN
ubuntu21.10noarchexim4< 4.94-15ubuntu1.2UNKNOWN
ubuntu22.04noarchexim4< 4.94-15ubuntu1.2UNKNOWN
ubuntu14.04noarchexim4< 4.82-3ubuntu2.4+esm3UNKNOWN
ubuntu16.04noarchexim4< 4.86.2-2ubuntu2.6+esm1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	exim4	< 4.90.1-1ubuntu1.8	UNKNOWN
ubuntu	20.04	noarch	exim4	< 4.93-13ubuntu1.5	UNKNOWN
ubuntu	20.10	noarch	exim4	< 4.94-7ubuntu1.2	UNKNOWN
ubuntu	21.04	noarch	exim4	< 4.94-15ubuntu1.2	UNKNOWN
ubuntu	21.10	noarch	exim4	< 4.94-15ubuntu1.2	UNKNOWN
ubuntu	22.04	noarch	exim4	< 4.94-15ubuntu1.2	UNKNOWN
ubuntu	14.04	noarch	exim4	< 4.82-3ubuntu2.4+esm3	UNKNOWN
ubuntu	16.04	noarch	exim4	< 4.86.2-2ubuntu2.6+esm1	UNKNOWN