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CVE-2017-1000405

EPSS 7.64% · P92
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I. Basic Information for CVE-2017-1000405

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux Kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux Kernel 2.6.38版本至4.14版本中的THP实现的‘touch_pmd()’函数存在安全漏洞，该漏洞源于程序没有正确的使用‘pmd_mkdirty()’函数。攻击者可利用该漏洞覆盖只读权限的大页。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
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II. Public POCs for CVE-2017-1000405

#POC DescriptionSource LinkShenlong Link
1A POC for the Huge Dirty Cow vulnerability (CVE-2017-1000405)https://github.com/bindecy/HugeDirtyCowPOCPOC Details
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III. Intelligence Information for CVE-2017-1000405

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Same Patch Batch · n/a · 2017-11-30 · 56 CVEs total

CVE-2017-12359多款Cisco产品WebEx Advanced Recording Format Player 缓冲区错误漏洞
CVE-2017-14198Squiz Matrix 安全漏洞
CVE-2017-12370多款Cisco产品WebEx Recording Format Player和Advanced Recording Format Player 安全漏洞
CVE-2017-14196Squiz Matrix File Bridge插件路径遍历漏洞
CVE-2017-12372多款Cisco产品WebEx Recording Format Player和Advanced Recording Format Player 安全漏洞
CVE-2017-12371多款Cisco产品WebEx Recording Format Player和Advanced Recording Format Player 安全漏洞
CVE-2017-14197Squiz Matrix Matrix WYSIWYG插件跨站脚本漏洞
CVE-2017-12362Cisco Meeting Server 安全漏洞
CVE-2017-12361Cisco Jabber for Windows 信息泄露漏洞
CVE-2017-12360Cisco WebEx Business Suite meeting site和Cisco WebEx Meetings site WebEx Recording Format P
CVE-2017-12363Cisco WebEx Meeting Server 安全漏洞
CVE-2017-12358Cisco Jabber for Windows、Mac、Android和iOS Cisco Jabber 跨站脚本漏洞
CVE-2017-12357Cisco Unified Communications Manager 跨站脚本漏洞
CVE-2017-12356Cisco Jabber for Windows、Mac、Android和iOS Cisco Jabber 跨站脚本漏洞
CVE-2017-12355Cisco IOS XR Software 安全漏洞
CVE-2017-12354Cisco Secure Access Control System 信息泄露漏洞
CVE-2017-12353Cisco Email Security Appliance Cisco AsyncOS Software Multipurpose Internet Mail Extension
CVE-2017-12352Cisco Application Policy Infrastructure Controller 命令注入漏洞
CVE-2017-12351多款Cisco产品NX-OS System Software 安全漏洞
CVE-2017-12349Cisco UCS Central Software 安全漏洞

Showing top 20 of 56 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2017-1000405

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