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Vulnerability details: VCID-5mct-n1a5-aaad
Vulnerability ID VCID-5mct-n1a5-aaad
Aliases CVE-2017-16944
Summary The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.
Status Published
Exploitability 2.0
Weighted Severity 9.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-16944.html
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-16944.json
epss 0.50610 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.50610 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.50610 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.50610 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.69366 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.69366 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.69366 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.71883 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.74993 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
epss 0.85058 https://api.first.org/data/v1/epss?cve=CVE-2017-16944
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1517684
generic_textual High https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16943
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16944
generic_textual High https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-16944
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-16944
archlinux Critical https://security.archlinux.org/AVG-518
generic_textual Medium https://ubuntu.com/security/notices/USN-3499-1
Reference id Reference type URL
http://openwall.com/lists/oss-security/2017/11/25/1
http://openwall.com/lists/oss-security/2017/11/25/2
http://openwall.com/lists/oss-security/2017/11/25/3
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-16944.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-16944.json
https://api.first.org/data/v1/epss?cve=CVE-2017-16944
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16943
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16944
https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
https://ubuntu.com/security/notices/USN-3499-1
https://www.debian.org/security/2017/dsa-4053
https://www.exploit-db.com/exploits/43184/
http://www.openwall.com/lists/oss-security/2021/05/04/7
http://www.securitytracker.com/id/1039873
1517684 https://bugzilla.redhat.com/show_bug.cgi?id=1517684
882671 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882671
ASA-201711-32 https://security.archlinux.org/ASA-201711-32
AVG-518 https://security.archlinux.org/AVG-518
cpe:2.3:a:exim:exim:4.88:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:exim:exim:4.88:*:*:*:*:*:*:*
cpe:2.3:a:exim:exim:4.89:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:exim:exim:4.89:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2017-16944 Exploit https://bugs.exim.org/show_bug.cgi?id=2201
CVE-2017-16944 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/43184.txt
CVE-2017-16944 https://nvd.nist.gov/vuln/detail/CVE-2017-16944
GLSA-201803-01 https://security.gentoo.org/glsa/201803-01
USN-3499-1 https://usn.ubuntu.com/3499-1/
Data source Exploit-DB
Date added Nov. 27, 2017
Description Exim 4.89 - 'BDAT' Denial of Service
Ransomware campaign use Known
Source publication date Nov. 27, 2017
Exploit type dos
Platform multiple
Source update date Nov. 27, 2017
Source URL https://bugs.exim.org/show_bug.cgi?id=2201
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-16944.json
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: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-16944
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-16944
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 0.97629
EPSS Score 0.50610
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.