CVE-2011-3145— mount.ecrpytfs_private sets group owner of /etc/mtab to user's primary group
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
eCryptfs（Enterprise Cryptographic Filesystem，企业加密文件系统）是一套适用于加密Linux系统的磁盘加密软件。该软件兼容POSIX文件系统级加密，并支持文件粒度（文件或目录）加密、多种加密方式等。 eCryptfs中存在安全绕过漏洞。远程攻击者可以利用该漏洞绕过某些安全限制并获得应用程序的授权访问来破坏“mtab”文件，导致拒绝服务。
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I. Basic Information for CVE-2011-3145
Vulnerability Information
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Vulnerability Title
mount.ecrpytfs_private sets group owner of /etc/mtab to user's primary group
Source: CVE Program / CVE List V5
Vulnerability Description
When mount.ecrpytfs_private before version 87-0ubuntu1.2 calls setreuid() it doesn't also set the effective group id. So when it creates the new version, mtab.tmp, it's created with the group id of the user running mount.ecryptfs_private.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
eCryptfs 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eCryptfs（Enterprise Cryptographic Filesystem，企业加密文件系统）是一套适用于加密Linux系统的磁盘加密软件。该软件兼容POSIX文件系统级加密，并支持文件粒度（文件或目录）加密、多种加密方式等。 eCryptfs中存在安全绕过漏洞。远程攻击者可以利用该漏洞绕过某些安全限制并获得应用程序的授权访问来破坏“mtab”文件，导致拒绝服务。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2011-3145
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2011-3145 (1)
-
http://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/revision/558 x_refsource_MISC
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IV. Related Vulnerabilities
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