Vulnerability Details : CVE-2017-1087
In FreeBSD 10.x before 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24 named paths are globally scoped, meaning a process located in one jail can read and modify the content of POSIX shared memory objects created by a process in another jail or the host system. As a result, a malicious user that has access to a jailed system is able to abuse shared memory by injecting malicious content in the shared memory region. This memory region might be executed by applications trusting the shared memory, like Squid. This issue could lead to a Denial of Service or local privilege escalation.
Vulnerability category: Directory traversalGain privilegeDenial of service
Products affected by CVE-2017-1087
- cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-1087
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-1087
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-1087
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-1087
-
http://www.securitytracker.com/id/1039810
FreeBSD POSIX shm Globally Shared Namespace May Let Local Users Deny Service or Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
-
http://www.securityfocus.com/bid/101867
FreeBSD CVE-2017-1087 Local Privilege Escalation VulnerabiityThird Party Advisory;VDB Entry
-
https://www.freebsd.org/security/advisories/FreeBSD-SA-17:09.shm.asc
Vendor Advisory
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