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CVE-2012-2123

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.

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。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 3.3.3之前版本的security/commoncap.c中的cap_bprm_set_creds函数中存在漏洞，该漏洞源于未正确处理执行特权的可执行文件的文件系统功能（也称fcaps）的使用。本地用户可利用该漏洞借助特制应用程序绕过预期个性限制，该漏洞已被使用禁用ASLR的父进程证实。

AI Predicted 2.6 Difficulty: Easy EPSS 0.40% · P33
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I. Basic Information for CVE-2012-2123

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.
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
Linux kernel ‘security/commoncap.c’ 权限许可和访问控制问题漏洞
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。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 3.3.3之前版本的security/commoncap.c中的cap_bprm_set_creds函数中存在漏洞，该漏洞源于未正确处理执行特权的可执行文件的文件系统功能（也称fcaps）的使用。本地用户可利用该漏洞借助特制应用程序绕过预期个性限制，该漏洞已被使用禁用ASLR的父进程证实。
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 -

II. Public POCs for CVE-2012-2123

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III. Intelligence Information for CVE-2012-2123

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Patches & Fixes for CVE-2012-2123 (2)

Vendor Advisories for CVE-2012-2123 (7)

Mailing List Discussions for CVE-2012-2123 (1)

Other References for CVE-2012-2123 (1)

Same Patch Batch · n/a · 2012-05-17 · 21 CVEs total

CVE-2012-1090 Linux Kerne ‘cifs_lookup’ 权限许可和访问控制问题漏洞
CVE-2012-2319 Linux kernel 权限许可和访问控制问题漏洞
CVE-2012-2121 Linux kernel ‘KVM’ 权限许可和访问控制漏洞
CVE-2012-1601 Linux Kernel ‘KVM_CREATE_IRQCHIP ioctl’ 资源管理错误漏洞
CVE-2012-1179 Linux Kernel ‘KVM’ 权限许可和访问控制漏洞
CVE-2011-4611 Linux kernel ‘perf_event_interrupt’ 整数溢出漏洞
CVE-2011-4326 Linux kernel 资源管理错误漏洞
CVE-2011-4131 Linux Kernel ‘NFSv4’ 缓冲区错误漏洞
CVE-2012-1146 Linux Kernel ‘mem_cgroup_usage_unregister_event’ 拒绝服务漏洞
CVE-2012-1097 Linux Kernel ‘regset’ 拒绝服务漏洞
CVE-2011-3637 Linux Kernel ‘m_stop’ 输入验证错误漏洞
CVE-2012-0879 Linux Kernel ‘I/O’ 输入验证错误漏洞
CVE-2012-0207 Linux Kernel ‘igmp_heard_query’ 资源管理错误漏洞
CVE-2012-0058 Linux Kernel ‘kiocb_batch_free’ 资源管理错误漏洞
CVE-2012-0044 Linux kernel 输入验证错误漏洞
CVE-2012-0038 Linux Kernel ‘xfs_acl_from_disk’ 整数溢出漏洞
CVE-2011-4621 Linux Kernel拒绝服务漏洞
CVE-2011-4594 Linux Kernel ‘net/socket.c’ 拒绝服务漏洞
CVE-2011-4112 Linux Kernel ‘IFF_TX_SKB_SHARING’ 权限许可和访问控制问题漏洞
CVE-2011-4097 Linux kernel 输入验证错误漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2012-2123

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