Vulnerability Details : CVE-2018-17158
In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, an integer overflow error can occur when handling the client address length field in an NFSv4 request. Unprivileged remote users with access to the NFS server can crash the system by sending a specially crafted NFSv4 request.
Vulnerability category: Overflow
Products affected by CVE-2018-17158
- cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.2:p5:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-17158
0.77%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-17158
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-2018-17158
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-17158
-
https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc
Third Party Advisory
-
https://secuniaresearch.flexerasoftware.com/secunia_research/2018-24/
Secunia Research Advisories | FlexeraThird Party Advisory
-
http://www.securitytracker.com/id/1042164
FreeBSD NFS Server Code Flaws Let Remote Users Execute Arbitrary Code - SecurityTrackerThird Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/106192
FreeBSD Network File System Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
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