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CVE-2011-1739Date: (C)2011-05-03   (M)2018-02-19


The makemask function in mountd.c in mountd in FreeBSD 7.4 through 8.2 does not properly handle a -network field specifying a CIDR block with a prefix length that is not an integer multiple of 8, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances via an NFS mount request.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : CVSS Score : 4.3
Exploit Score: Exploit Score: 8.6
Impact Score: Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: Access Vector: NETWORK
Attack Complexity: Access Complexity: MEDIUM
Privileges Required: Authentication: NONE
User Interaction: Confidentiality: NONE
Scope: Integrity: PARTIAL
Confidentiality: Availability: NONE
Integrity:  
Availability:  
  
Reference:
SECTRACK-1025425
SECUNIA-44307
BID-47517
ADV-2011-1076
FreeBSD-SA-11:01
freebsd-mountd-security-bypass(66981)

CPE    4
cpe:/o:freebsd:freebsd:7.4
cpe:/o:freebsd:freebsd:8.0
cpe:/o:freebsd:freebsd:8.1
cpe:/o:freebsd:freebsd:8.2
...
CWE    1
CWE-20

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