Vulnerability Details : CVE-2015-4176
fs/namespace.c in the Linux kernel before 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory.
Products affected by CVE-2015-4176
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-4176
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-4176
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:P/A:N |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2015-4176
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-4176
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56f
kernel/git/torvalds/linux.git - Linux kernel source treeVendor Advisory
-
https://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56f
mnt: Update detach_mounts to leave mounts connected · torvalds/linux@e0c9c0a · GitHubVendor Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1249442
1249442 – (CVE-2015-4176) CVE-2015-4176 kernel:deletion of a file or directory could unmount and reveal data under a mount point.
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http://www.openwall.com/lists/oss-security/2015/06/04/5
oss-security - Re: Re: CVE request Linux kernel: ns: user namespaces panic
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http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
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