CVE-2017-16944

high
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Description

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.

References

https://bugs.exim.org/show_bug.cgi?id=2201

https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html

http://openwall.com/lists/oss-security/2017/11/25/3

http://openwall.com/lists/oss-security/2017/11/25/2

http://openwall.com/lists/oss-security/2017/11/25/1

http://www.securitytracker.com/id/1039873

https://www.exploit-db.com/exploits/43184/

https://www.debian.org/security/2017/dsa-4053

http://www.openwall.com/lists/oss-security/2021/05/04/7

Details

Source: MITRE

Published: 2017-11-25

Updated: 2021-05-04

Type: CWE-835

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
149614openSUSE Security Update : exim (openSUSE-2021-677) (Stack Clash)NessusSuSE Local Security Checks
critical
107178GLSA-201803-01 : Exim: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
105803Fedora 27 : exim (2017-0053bb9719)NessusFedora Local Security Checks
critical
105417Amazon Linux AMI : exim (ALAS-2017-932)NessusAmazon Linux Local Security Checks
critical
105196Fedora 26 : exim (2017-0032baa7d7)NessusFedora Local Security Checks
critical
104944FreeBSD : exim -- remote DoS attack in BDAT processing (75dd622c-d5fd-11e7-b9fe-c13eb7bcbf4f)NessusFreeBSD Local Security Checks
high
104940Debian DSA-4053-1 : exim4 - security updateNessusDebian Local Security Checks
critical
104882Ubuntu 17.04 / 17.10 : exim4 vulnerability (USN-3499-1)NessusUbuntu Local Security Checks
high