Vulnerability Details : CVE-2012-2127
fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.
Vulnerability category: OverflowDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2012-2127
Probability of exploitation activity in the next 30 days: 4.32%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 91 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2012-2127
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
CWE ids for CVE-2012-2127
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The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-2127
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
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http://www.openwall.com/lists/oss-security/2012/04/20/25
oss-security - Re: CVE request: pid namespace leak in kernel 3.0 and 3.1Exploit
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https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
procfs: fix a vfsmount longterm reference leak · torvalds/linux@905ad26 · GitHubExploit;Patch
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https://bugzilla.redhat.com/show_bug.cgi?id=815188
815188 – (CVE-2012-2127) CVE-2012-2127 kernel: pid namespace leak in kernel 3.0 and 3.1Exploit
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http://www.securityfocus.com/bid/55774
Linux Kernel 'fs/proc/root.c' Remote Denial of Service Vulnerability
- http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2
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https://bugzilla.novell.com/show_bug.cgi?id=757783
Bug 757783 – VUL-1: kernel: clone() with CLONE_NEWPID leaks kernel memoryExploit
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http://www.ubuntu.com/usn/USN-1594-1
USN-1594-1: Linux kernel (Oneiric backport) vulnerabilities | Ubuntu security notices
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http://www.kernel.org/pub/linux/kernel/v3.x/
Index of /pub/linux/kernel/v3.x/
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http://www.openwall.com/lists/oss-security/2012/04/22/1
oss-security - Re: Re: CVE request: pid namespace leak in kernel 3.0 and 3.1
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http://ubuntu.com/usn/usn-1607-1
USN-1607-1: Linux kernel vulnerabilities | Ubuntu security notices
Products affected by CVE-2012-2127
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.9:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.8:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.7:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.6:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.5:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.4:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:3.1.3:*:*:*:*:*:*:*