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cnvd-2015-07700
Vulnerability from cnvd
Title
Linux kernel本地权限提升漏洞（CNVD-2015-07700）
Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。
Linux kernel 4.2.3及之前版本的fs/dcache.c文件中的‘prepend_path’函数存在安全漏洞。由于程序未能正确处理绑定挂载中的重命名操作。本地攻击者可通过重命名目录利用该漏洞绕过既定的容器保护机制。
Severity
高
VLAI Severity ?
Patch Name
Linux kernel本地权限提升漏洞（CNVD-2015-07700）的补丁
Patch Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。
Linux kernel 4.2.3及之前版本的fs/dcache.c文件中的‘prepend_path’函数存在安全漏洞。由于程序未能正确处理绑定挂载中的重命名操作。本地攻击者可通过重命名目录利用该漏洞绕过既定的容器保护机制。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://permalink.gmane.org/gmane.linux.kernel.containers/29177
Reference
http://permalink.gmane.org/gmane.linux.kernel.containers/29177
http://www.securityfocus.com/bid/73926
Impacted products
| Name | Linux Kernel <=4.2.3 |
|---|
{
"bids": {
"bid": {
"bidNumber": "73926"
}
},
"cves": {
"cve": {
"cveNumber": "CVE-2015-2925"
}
},
"description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.2.3\u53ca\u4e4b\u524d\u7248\u672c\u7684fs/dcache.c\u6587\u4ef6\u4e2d\u7684\u2018prepend_path\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u7531\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406\u7ed1\u5b9a\u6302\u8f7d\u4e2d\u7684\u91cd\u547d\u540d\u64cd\u4f5c\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u91cd\u547d\u540d\u76ee\u5f55\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u65e2\u5b9a\u7684\u5bb9\u5668\u4fdd\u62a4\u673a\u5236\u3002",
"discovererName": "Josh Boyer",
"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://permalink.gmane.org/gmane.linux.kernel.containers/29177",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2015-07700",
"openTime": "2015-11-23",
"patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002 \r\n\r\nLinux kernel 4.2.3\u53ca\u4e4b\u524d\u7248\u672c\u7684fs/dcache.c\u6587\u4ef6\u4e2d\u7684\u2018prepend_path\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u7531\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406\u7ed1\u5b9a\u6302\u8f7d\u4e2d\u7684\u91cd\u547d\u540d\u64cd\u4f5c\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u91cd\u547d\u540d\u76ee\u5f55\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u65e2\u5b9a\u7684\u5bb9\u5668\u4fdd\u62a4\u673a\u5236\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\u672c\u5730\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2015-07700\uff09\u7684\u8865\u4e01",
"products": {
"product": "Linux Kernel \u003c=4.2.3"
},
"referenceLink": "http://permalink.gmane.org/gmane.linux.kernel.containers/29177\r\nhttp://www.securityfocus.com/bid/73926",
"serverity": "\u9ad8",
"submitTime": "2015-11-19",
"title": "Linux kernel\u672c\u5730\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2015-07700\uff09"
}
CVE-2015-2925 (GCVE-0-2015-2925)
Vulnerability from cvelistv5
Published
2015-11-16 11:00
Modified
2024-08-06 05:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
The prepend_path function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to bypass an intended container protection mechanism by renaming a directory, related to a "double-chroot attack."
References
{
"containers": {
"adp": [
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"providerMetadata": {
"dateUpdated": "2024-08-06T05:32:20.368Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "SUSE-SU-2015:2292",
"tags": [
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html"
},
{
"name": "RHSA-2015:2636",
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],
"url": "http://rhn.redhat.com/errata/RHSA-2015-2636.html"
},
{
"name": "DSA-3372",
"tags": [
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],
"url": "http://www.debian.org/security/2015/dsa-3372"
},
{
"name": "[containers] 20150403 [PATCH review 17/19] vfs: Test for and handle paths that are unreachable from their mnt_root",
"tags": [
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"x_refsource_MLIST",
"x_transferred"
],
"url": "http://permalink.gmane.org/gmane.linux.kernel.containers/29173"
},
{
"name": "RHSA-2016:0068",
"tags": [
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"x_refsource_REDHAT",
"x_transferred"
],
"url": "http://rhn.redhat.com/errata/RHSA-2016-0068.html"
},
{
"tags": [
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],
"url": "http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22\u0026id=520b64102de2f184036024b2a53de2b67463bd78"
},
{
"name": "SUSE-SU-2016:0337",
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html"
},
{
"name": "USN-2792-1",
"tags": [
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"x_refsource_UBUNTU",
"x_transferred"
],
"url": "http://www.ubuntu.com/usn/USN-2792-1"
},
{
"name": "73926",
"tags": [
"vdb-entry",
"x_refsource_BID",
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],
"url": "http://www.securityfocus.com/bid/73926"
},
{
"name": "SUSE-SU-2016:0434",
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html"
},
{
"name": "DSA-3364",
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],
"url": "http://www.debian.org/security/2015/dsa-3364"
},
{
"name": "USN-2794-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU",
"x_transferred"
],
"url": "http://www.ubuntu.com/usn/USN-2794-1"
},
{
"name": "USN-2799-1",
"tags": [
"vendor-advisory",
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],
"url": "http://www.ubuntu.com/usn/USN-2799-1"
},
{
"name": "USN-2795-1",
"tags": [
"vendor-advisory",
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],
"url": "http://www.ubuntu.com/usn/USN-2795-1"
},
{
"tags": [
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"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html"
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{
"name": "SUSE-SU-2015:2194",
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},
{
"name": "SUSE-SU-2016:0380",
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"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html"
},
{
"name": "SUSE-SU-2016:0335",
"tags": [
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{
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"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
},
{
"name": "[containers] 20150403 [PATCH review 19/19] vfs: Do not allow escaping from bind mounts.",
"tags": [
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"x_refsource_MLIST",
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"url": "http://permalink.gmane.org/gmane.linux.kernel.containers/29177"
},
{
"name": "SUSE-SU-2016:0383",
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{
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"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65"
},
{
"name": "SUSE-SU-2016:0386",
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html"
},
{
"name": "[oss-security] 20150404 Re: Linux namespaces: It is possible to escape from bind mounts",
"tags": [
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{
"tags": [
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1209367"
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{
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],
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},
{
"name": "SUSE-SU-2016:0381",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html"
},
{
"name": "USN-2798-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU",
"x_transferred"
],
"url": "http://www.ubuntu.com/usn/USN-2798-1"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"datePublic": "2015-04-03T00:00:00",
"descriptions": [
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"value": "The prepend_path function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to bypass an intended container protection mechanism by renaming a directory, related to a \"double-chroot attack.\""
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
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"type": "text"
}
]
}
],
"providerMetadata": {
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"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
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],
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},
{
"name": "RHSA-2015:2636",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "http://rhn.redhat.com/errata/RHSA-2015-2636.html"
},
{
"name": "DSA-3372",
"tags": [
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"x_refsource_DEBIAN"
],
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},
{
"name": "[containers] 20150403 [PATCH review 17/19] vfs: Test for and handle paths that are unreachable from their mnt_root",
"tags": [
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],
"url": "http://permalink.gmane.org/gmane.linux.kernel.containers/29173"
},
{
"name": "RHSA-2016:0068",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "http://rhn.redhat.com/errata/RHSA-2016-0068.html"
},
{
"tags": [
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],
"url": "http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22\u0026id=520b64102de2f184036024b2a53de2b67463bd78"
},
{
"name": "SUSE-SU-2016:0337",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html"
},
{
"name": "USN-2792-1",
"tags": [
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"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2792-1"
},
{
"name": "73926",
"tags": [
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"x_refsource_BID"
],
"url": "http://www.securityfocus.com/bid/73926"
},
{
"name": "SUSE-SU-2016:0434",
"tags": [
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"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html"
},
{
"name": "DSA-3364",
"tags": [
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"x_refsource_DEBIAN"
],
"url": "http://www.debian.org/security/2015/dsa-3364"
},
{
"name": "USN-2794-1",
"tags": [
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"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2794-1"
},
{
"name": "USN-2799-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2799-1"
},
{
"name": "USN-2795-1",
"tags": [
"vendor-advisory",
"x_refsource_UBUNTU"
],
"url": "http://www.ubuntu.com/usn/USN-2795-1"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html"
},
{
"name": "SUSE-SU-2015:2194",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html"
},
{
"name": "SUSE-SU-2016:0380",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html"
},
{
"name": "SUSE-SU-2016:0335",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
},
{
"name": "[containers] 20150403 [PATCH review 19/19] vfs: Do not allow escaping from bind mounts.",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://permalink.gmane.org/gmane.linux.kernel.containers/29177"
},
{
"name": "SUSE-SU-2016:0383",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65"
},
{
"name": "SUSE-SU-2016:0386",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html"
},
{
"name": "[oss-security] 20150404 Re: Linux namespaces: It is possible to escape from bind mounts",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2015/04/04/4"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.4"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1209367"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=397d425dc26da728396e66d392d5dcb8dac30c37"
},
{
"name": "SUSE-SU-2016:0384",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/torvalds/linux/commit/cde93be45a8a90d8c264c776fab63487b5038a65"
},
{
"tags": [
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],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1209373"
},
{
"tags": [
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],
"url": "https://github.com/torvalds/linux/commit/397d425dc26da728396e66d392d5dcb8dac30c37"
},
{
"name": "SUSE-SU-2016:0387",
"tags": [
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],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html"
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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