Vulnerability Details : CVE-2010-2020
sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request.
Vulnerability category: Input validation
Threat overview for CVE-2010-2020
Top countries where our scanners detected CVE-2010-2020
Top open port discovered on systems with this issue
80
IPs affected by CVE-2010-2020 1
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Exploit prediction scoring system (EPSS) score for CVE-2010-2020
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ % EPSS Score History EPSS FAQ
CVSS scores for CVE-2010-2020
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST |
CWE ids for CVE-2010-2020
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2010-2020
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http://www.exploit-db.com/exploits/14003
FreeBSD - 'mountnfs()' Denial of Service - FreeBSD dos Exploit
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http://www.exploit-db.com/exploits/14002
FreeBSD 8.0/7.3/7.2 - 'nfs_mount()' Local Privilege Escalation - FreeBSD local Exploit
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http://security.FreeBSD.org/advisories/FreeBSD-SA-10:06.nfsclient.asc
Vendor Advisory
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http://securitytracker.com/id?1024039
FreeBSD Parameter Validation Flaw in nfsclient Lets Local Users Gain Elevated Privileges - SecurityTracker
Products affected by CVE-2010-2020
- cpe:2.3:o:freebsd:freebsd:7.2:pre-release:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:7.2:stable:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:8.1-prerelease:*:*:*:*:*:*:*