cnvd-2016-01042
Vulnerability from cnvd
Title: Linux kernel权限提升漏洞（CNVD-2016-01042）
Description:
Linux kernel是一个开源，自由的操作系统核心，最初由Linus Torvalds完成。
Linux kernel 4.4.1及之前版本的kernel/ptrace.c文件中存在安全漏洞，该漏洞源于程序未能正确处理uid和gid映射。本地攻击者可通过建立用户命名空间，等待root进程使用不安全的uid或gid进入该命名空间后使用ptrace系统调用，利用该漏洞获取权限。
Severity: 中
Patch Name: Linux kernel权限提升漏洞（CNVD-2016-01042）的补丁
Patch Description:
Linux kernel是一个开源，自由的操作系统核心，最初由Linus Torvalds完成。
Linux kernel 4.4.1及之前版本的kernel/ptrace.c文件中存在安全漏洞，该漏洞源于程序未能正确处理uid和gid映射。本地攻击者可通过建立用户命名空间，等待root进程使用不安全的uid或gid进入该命名空间后使用ptrace系统调用，利用该漏洞获取权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description:
用户可参考如下厂商提供的安全公告获取补丁以修复该漏洞： http://marc.info/?l=linux-kernel&m=145204641422813&w=2
Reference: http://marc.info/?l=linux-kernel&m=145204641422813&w=2
Impacted products
| Name | Linux Kernel <4.4.1 |
|---|
{
"bids": {
"bid": {
"bidNumber": "79899"
}
},
"cves": {
"cve": {
"cveNumber": "CVE-2015-8709"
}
},
"description": "Linux kernel\u662f\u4e00\u4e2a\u5f00\u6e90\uff0c\u81ea\u7531\u7684\u64cd\u4f5c\u7cfb\u7edf\u6838\u5fc3\uff0c\u6700\u521d\u7531Linus Torvalds\u5b8c\u6210\u3002\r\n\r\nLinux kernel 4.4.1\u53ca\u4e4b\u524d\u7248\u672c\u7684kernel/ptrace.c\u6587\u4ef6\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406uid\u548cgid\u6620\u5c04\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5efa\u7acb\u7528\u6237\u547d\u540d\u7a7a\u95f4\uff0c\u7b49\u5f85root\u8fdb\u7a0b\u4f7f\u7528\u4e0d\u5b89\u5168\u7684uid\u6216gid\u8fdb\u5165\u8be5\u547d\u540d\u7a7a\u95f4\u540e\u4f7f\u7528ptrace\u7cfb\u7edf\u8c03\u7528\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002",
"discovererName": "Jann Horn",
"formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u53d6\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttp://marc.info/?l=linux-kernel\u0026m=145204641422813\u0026w=2",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2016-01042",
"openTime": "2016-02-17",
"patchDescription": "Linux kernel\u662f\u4e00\u4e2a\u5f00\u6e90\uff0c\u81ea\u7531\u7684\u64cd\u4f5c\u7cfb\u7edf\u6838\u5fc3\uff0c\u6700\u521d\u7531Linus Torvalds\u5b8c\u6210\u3002\r\n\r\nLinux kernel 4.4.1\u53ca\u4e4b\u524d\u7248\u672c\u7684kernel/ptrace.c\u6587\u4ef6\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406uid\u548cgid\u6620\u5c04\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5efa\u7acb\u7528\u6237\u547d\u540d\u7a7a\u95f4\uff0c\u7b49\u5f85root\u8fdb\u7a0b\u4f7f\u7528\u4e0d\u5b89\u5168\u7684uid\u6216gid\u8fdb\u5165\u8be5\u547d\u540d\u7a7a\u95f4\u540e\u4f7f\u7528ptrace\u7cfb\u7edf\u8c03\u7528\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2016-01042\uff09\u7684\u8865\u4e01",
"products": {
"product": "Linux Kernel \u003c4.4.1"
},
"referenceLink": "http://marc.info/?l=linux-kernel\u0026m=145204641422813\u0026w=2",
"serverity": "\u4e2d",
"submitTime": "2016-02-11",
"title": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2016-01042\uff09"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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