National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-16944 Detail

Current 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.

Source:  MITRE
Description Last Modified:  11/25/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://openwall.com/lists/oss-security/2017/11/25/1 Mailing List
http://openwall.com/lists/oss-security/2017/11/25/2 Mailing List
http://openwall.com/lists/oss-security/2017/11/25/3 Mailing List
http://www.securitytracker.com/id/1039873 Third Party Advisory VDB Entry
https://bugs.exim.org/show_bug.cgi?id=2201 Exploit Issue Tracking
https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html Mailing List
https://www.debian.org/security/2017/dsa-4053 Third Party Advisory
https://www.exploit-db.com/exploits/43184/ Third Party Advisory VDB Entry

Technical Details

Vulnerability Type (View All)

  • Uncontrolled Resource Consumption ('Resource Exhaustion') (CWE-400)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-16944
NVD Published Date:
11/25/2017
NVD Last Modified:
12/07/2017