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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.freebsd:def:785
[Rus]
Version
3
Class
vulnerability
ALTXid
194689
Language
English
Severity
High
Title
exim -- remote DoS attack in BDAT processing (CVE-2017-16944)
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.
Family
unix
Platform
FreeBSD
Product
exim
Reference
packetstormsecurity: Exim-4.89-Denial-Of-Service
packetstormsecurity: Exim-4.89-Denial-Of-Service
Id:
Exim-4.89-Denial-Of-Service
Reference:
https://packetstormsecurity.com/files/145152/Exim-4.89-Denial-Of-Service.html
EXPLOIT-DB: 43184
EXPLOIT-DB: 43184
Id:
43184
Reference:
https://www.exploit-db.com/exploits/43184
FreeBSD: 75dd622c-d5fd-11e7-b9fe-c13eb7bcbf4f
FreeBSD: 75dd622c-d5fd-11e7-b9fe-c13eb7bcbf4f
Id:
75dd622c-d5fd-11e7-b9fe-c13eb7bcbf4f
CVE: CVE-2017-16944
CVE: CVE-2017-16944
Id:
CVE-2017-16944
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16944
Comment
: 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.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
7.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE:
835 (Loop with Unreachable Exit Condition ('Infinite Loop'))
References:
https://bugs.exim.org/show_bug.cgi?id=2201 (MISC)
https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html (MISC)
http://openwall.com/lists/oss-security/2017/11/25/3 (MISC)
http://openwall.com/lists/oss-security/2017/11/25/2 (MISC)
http://openwall.com/lists/oss-security/2017/11/25/1 (MISC)
1039873 (SECTRACK)
43184 (EXPLOIT-DB)
DSA-4053 (DEBIAN)
[oss-security] 20210504 21Nails: Multiple vulnerabilities in Exim (MLIST)
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