Vulnerability Details : CVE-2018-6918
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, the length field of the ipsec option header does not count the size of the option header itself, causing an infinite loop when the length is zero. This issue can allow a remote attacker who is able to send an arbitrary packet to cause the machine to crash.
Products affected by CVE-2018-6918
- cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-6918
0.97%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 83 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-6918
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2018-6918
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-6918
-
http://www.securityfocus.com/bid/103666
FreeBSD CVE-2018-6918 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:05.ipsec.asc
Vendor Advisory
-
https://support.apple.com/kb/HT210091
About the security content of AirPort Base Station Firmware Update 7.8.1 - Apple Support
-
https://seclists.org/bugtraq/2019/May/77
Bugtraq: APPLE-SA-2019-5-30-1 AirPort Base Station Firmware Update 7.9.1
-
https://support.apple.com/kb/HT210090
About the security content of AirPort Base Station Firmware Update 7.9.1 - Apple Support
-
http://www.securitytracker.com/id/1040628
FreeBSD IPsec AH Option Header Infinite Loop Lets Remote Users Cause the Target System to Crash - SecurityTrackerThird Party Advisory;VDB Entry
-
http://seclists.org/fulldisclosure/2019/Jun/6
Full Disclosure: APPLE-SA-2019-5-30-1 AirPort Base Station Firmware Update 7.9.1
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