Vulnerability Details : CVE-2011-1021
drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.
Exploit prediction scoring system (EPSS) score for CVE-2011-1021
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2011-1021
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
3.6
|
LOW | AV:L/AC:L/Au:N/C:N/I:P/A:P |
3.9
|
4.9
|
NIST |
CWE ids for CVE-2011-1021
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-1021
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http://www.openwall.com/lists/oss-security/2011/02/25/5
oss-security - Re: CVE request: kernel: /sys/kernel/debug/acpi/custom_method can bypass module restrictions
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=526b4af47f44148c9d665e57723ed9f86634c6e3
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https://bugzilla.redhat.com/show_bug.cgi?id=680841
680841 – (CVE-2011-1021) CVE-2011-1021 kernel: /sys/kernel/debug/acpi/custom_method can bypass module restrictions
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https://github.com/torvalds/linux/commit/526b4af47f44148c9d665e57723ed9f86634c6e3
ACPI: Split out custom_method functionality into an own driver · torvalds/linux@526b4af · GitHubExploit;Patch
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http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
404 Not Found
Products affected by CVE-2011-1021
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.9:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.9:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.9:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.9:rc2:*:*:*:*:*:*