Vulnerability Details : CVE-2013-1957
The clone_mnt function in fs/namespace.c in the Linux kernel before 3.8.6 does not properly restrict changes to the MNT_READONLY flag, which allows local users to bypass an intended read-only property of a filesystem by leveraging a separate mount namespace.
Products affected by CVE-2013-1957
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.8.4:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2013-1957
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 11 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2013-1957
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.7
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:N/A:N |
3.4
|
6.9
|
NIST |
CWE ids for CVE-2013-1957
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Assigned by: nvd@nist.gov (Primary)
References for CVE-2013-1957
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https://github.com/torvalds/linux/commit/132c94e31b8bca8ea921f9f96a57d684fa4ae0a9
vfs: Carefully propogate mounts across user namespaces · torvalds/linux@132c94e · GitHub
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http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=132c94e31b8bca8ea921f9f96a57d684fa4ae0a9
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http://www.openwall.com/lists/oss-security/2013/04/16/11
oss-security - Re: Re: Summary of security bugs (now fixed) in user namespaces
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