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Vulnerability details: VCID-5ket-3f28-aaan
Vulnerability ID VCID-5ket-3f28-aaan
Aliases CVE-2020-28021
Summary Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool file (which indirectly leads to remote code execution as root) via AUTH= in a MAIL FROM command.
Status Published
Exploitability 0.5
Weighted Severity 8.1
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-28021.html
epss 0.00236 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.00236 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00236 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.00245 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02108 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02108 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
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epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.02114 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
epss 0.08014 https://api.first.org/data/v1/epss?cve=CVE-2020-28021
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28007
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28008
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28009
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28010
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28011
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28012
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28013
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28014
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28015
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28017
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28019
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28021
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28022
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28023
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28024
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28025
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28026
cvssv2 9.0 https://nvd.nist.gov/vuln/detail/CVE-2020-28021
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-28021
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-28021
archlinux High https://security.archlinux.org/AVG-1911
generic_textual Medium https://ubuntu.com/security/notices/USN-4934-1
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-28021.html
https://api.first.org/data/v1/epss?cve=CVE-2020-28021
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28007
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28008
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28009
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28010
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28011
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28012
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28013
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28014
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28015
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28017
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28019
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28021
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28022
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28023
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28024
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28025
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28026
https://ubuntu.com/security/notices/USN-4934-1
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28021-MAUTH.txt
AVG-1911 https://security.archlinux.org/AVG-1911
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
CVE-2020-28021 https://nvd.nist.gov/vuln/detail/CVE-2020-28021
GLSA-202105-01 https://security.gentoo.org/glsa/202105-01
USN-4934-1 https://usn.ubuntu.com/4934-1/
No exploits are available.
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2020-28021
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-28021
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-28021
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.61217
EPSS Score 0.00236
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.