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Vulnerability details: VCID-zd9g-egsv-aaap
Vulnerability ID VCID-zd9g-egsv-aaap
Aliases CVE-2020-28024
Summary Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-787 Out-of-bounds Write
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-28024.html
epss 0.00411 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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epss 0.00411 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00411 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.00512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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epss 0.01224 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.01224 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
epss 0.01227 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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epss 0.01227 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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epss 0.01227 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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epss 0.37512 https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-28024
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2020-28024
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2020-28024
archlinux High https://security.archlinux.org/AVG-1911
generic_textual Medium https://ubuntu.com/security/notices/USN-4934-1
generic_textual Medium https://ubuntu.com/security/notices/USN-4934-2
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-28024.html
https://api.first.org/data/v1/epss?cve=CVE-2020-28024
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://ubuntu.com/security/notices/USN-4934-2
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.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-2020-28024 https://nvd.nist.gov/vuln/detail/CVE-2020-28024
GLSA-202105-01 https://security.gentoo.org/glsa/202105-01
USN-4934-1 https://usn.ubuntu.com/4934-1/
USN-4934-2 https://usn.ubuntu.com/4934-2/
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-28024
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:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-28024
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:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-28024
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 0.73597
EPSS Score 0.00411
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.