cnvd - cnvd-2017-27466

cnvd-2017-27466

Vulnerability from cnvd

Title: Linux kernel内存破坏漏洞（CNVD-2017-27466）

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中存在本地内存破坏漏洞。本地攻击者可利用该漏洞在应用程序的上下文中以root权限执行任意代码，破坏内核内存，或造成拒绝服务。

Severity: 高

Patch Name: Linux kernel内存破坏漏洞（CNVD-2017-27466）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中存在本地内存破坏漏洞。本地攻击者可利用该漏洞在应用程序的上下文中以root权限执行任意代码，破坏内核内存，或造成拒绝服务。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:

厂商已发布了漏洞修复程序，请及时关注更新： https://www.kernel.org/

Reference: http://www.securityfocus.com/bid/100262/

Impacted products

Name
Linux Kernel

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "100262"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-1000112"
    }
  },
  "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\u4e2d\u5b58\u5728\u672c\u5730\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5e94\u7528\u7a0b\u5e8f\u7684\u4e0a\u4e0b\u6587\u4e2d\u4ee5root\u6743\u9650\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u7834\u574f\u5185\u6838\u5185\u5b58\uff0c\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Andrey Konovalov",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.kernel.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-27466",
  "openTime": "2017-09-19",
  "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\u4e2d\u5b58\u5728\u672c\u5730\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u5e94\u7528\u7a0b\u5e8f\u7684\u4e0a\u4e0b\u6587\u4e2d\u4ee5root\u6743\u9650\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u7834\u574f\u5185\u6838\u5185\u5b58\uff0c\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\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\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff08CNVD-2017-27466\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel"
  },
  "referenceLink": "http://www.securityfocus.com/bid/100262/",
  "serverity": "\u9ad8",
  "submitTime": "2017-08-17",
  "title": "Linux kernel\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\uff08CNVD-2017-27466\uff09"
}

CVE-2017-1000112 (GCVE-0-2017-1000112)

Vulnerability from cvelistv5

Published

2017-10-04 01:00

Modified

2024-08-05 21:53

Severity ?

CWE

Summary

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.

References

▼	URL	Tags
	http://seclists.org/oss-sec/2017/q3/277	mailing-list, x_refsource_MLIST
	https://access.redhat.com/errata/RHSA-2017:3200	vendor-advisory, x_refsource_REDHAT
	http://www.securityfocus.com/bid/100262	vdb-entry, x_refsource_BID
	https://access.redhat.com/errata/RHSA-2017:2918	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2017:2931	vendor-advisory, x_refsource_REDHAT
	http://www.debian.org/security/2017/dsa-3981	vendor-advisory, x_refsource_DEBIAN
	https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112	x_refsource_MISC
	http://www.securitytracker.com/id/1039162	vdb-entry, x_refsource_SECTRACK
	https://www.exploit-db.com/exploits/45147/	exploit, x_refsource_EXPLOIT-DB
	https://access.redhat.com/errata/RHSA-2017:2930	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2019:1932	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2019:1931	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2019:4159	vendor-advisory, x_refsource_REDHAT

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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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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