CVE-2017-1000405
"Linux THP Dirty Cow Variation"
Description
The Linux Kernel versions 2.6.38 through 4.14 have a problematic use of pmd_mkdirty() in the touch_pmd() function inside the THP implementation. touch_pmd() can be reached by get_user_pages(). In such case, the pmd will become dirty. This scenario breaks the new can_follow_write_pmd()'s logic - pmd can become dirty without going through a COW cycle. This bug is not as severe as the original "Dirty cow" because an ext4 file (or any other regular file) cannot be mapped using THP. Nevertheless, it does allow us to overwrite read-only huge pages. For example, the zero huge page and sealed shmem files can be overwritten (since their mapping can be populated using THP). Note that after the first write page-fault to the zero page, it will be replaced with a new fresh (and zeroed) thp.
INFO
Published Date :
Nov. 30, 2017, 10:29 p.m.
Last Modified :
Nov. 21, 2024, 3:04 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.0
Public PoC/Exploit Available at Github
CVE-2017-1000405 has a 7 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-1000405.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Linux & Android Kernel Vulnerability research and exploitation
exploitation kernel-bypass kernel-exploitation kernel-security linux linux-kernel-hacking pwn vulnerability-research lpe privilege-escalation privilege-escalation-exploits
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None
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C
A POC for the Huge Dirty Cow vulnerability (CVE-2017-1000405)
C
✍️ A curated list of CVE PoCs.
awesome cve poc
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-1000405 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-1000405 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Jun. 26, 2023
Action Type Old Value New Value Removed CVSS V3 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://www.securitytracker.com/id/1040020 No Types Assigned http://www.securitytracker.com/id/1040020 Third Party Advisory, VDB Entry Changed Reference Type https://access.redhat.com/errata/RHSA-2018:0180 No Types Assigned https://access.redhat.com/errata/RHSA-2018:0180 Third Party Advisory Changed Reference Type https://source.android.com/security/bulletin/pixel/2018-02-01 No Types Assigned https://source.android.com/security/bulletin/pixel/2018-02-01 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.38 up to (including) 4.14 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.2.87 up to (excluding) 3.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.10.106 up to (excluding) 3.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.12.73 up to (excluding) 3.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.16.42 up to (excluding) 3.16.52 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.18.55 up to (excluding) 3.18.86 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.1.41 up to (excluding) 4.1.48 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.4.70 up to (excluding) 4.4.104 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.9.7 up to (excluding) 4.9.67 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.4 -
CVE Modified by [email protected]
Feb. 13, 2018
Action Type Old Value New Value Added Reference https://source.android.com/security/bulletin/pixel/2018-02-01 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 27, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:0180 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 24, 2017
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1040020 [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 20, 2017
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:M/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://medium.com/bindecy/huge-dirty-cow-cve-2017-1000405-110eca132de0 No Types Assigned https://medium.com/bindecy/huge-dirty-cow-cve-2017-1000405-110eca132de0 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://www.exploit-db.com/exploits/43199/ No Types Assigned https://www.exploit-db.com/exploits/43199/ Exploit, Issue Tracking, Third Party Advisory, VDB Entry Changed Reference Type http://www.securityfocus.com/bid/102032 No Types Assigned http://www.securityfocus.com/bid/102032 Third Party Advisory, VDB Entry Added CWE CWE-362 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.38 up to (including) 4.14 -
CVE Modified by [email protected]
Dec. 06, 2017
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/102032 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 03, 2017
Action Type Old Value New Value Added Reference https://www.exploit-db.com/exploits/43199/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-1000405 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-1000405
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} -0.08%
score
0.55549
percentile