cnvd - cnvd-2020-01950

cnvd-2020-01950

Vulnerability from cnvd

Title: OpenBSD权限提升漏洞

Description:

OpenBSD是加拿大OpenBSD项目组的一套跨平台的、基于BSD的类UNIX操作系统。

OpenBSD 6.6及之前版本中存在权限提升漏洞，本地攻击者可利用该漏洞将权限提升至root，进而以该权限执行自己的库代码。

Severity: 高

Patch Name: OpenBSD权限提升漏洞的补丁

Patch Description:

OpenBSD是加拿大OpenBSD项目组的一套跨平台的、基于BSD的类UNIX操作系统。

OpenBSD 6.6及之前版本中存在权限提升漏洞，本地攻击者可利用该漏洞将权限提升至root，进而以该权限执行自己的库代码。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.openbsd.org

Reference: https://www.openbsd.org/errata66.html https://www.openwall.com/lists/oss-security/2019/12/11/9

Impacted products

Name
OpenBSD OpenBSD <=6.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-19726"
    }
  },
  "description": "OpenBSD\u662f\u52a0\u62ff\u5927OpenBSD\u9879\u76ee\u7ec4\u7684\u4e00\u5957\u8de8\u5e73\u53f0\u7684\u3001\u57fa\u4e8eBSD\u7684\u7c7bUNIX\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nOpenBSD 6.6\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u6743\u9650\u63d0\u5347\u81f3root\uff0c\u8fdb\u800c\u4ee5\u8be5\u6743\u9650\u6267\u884c\u81ea\u5df1\u7684\u5e93\u4ee3\u7801\u3002",
  "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.openbsd.org",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-01950",
  "openTime": "2020-01-14",
  "patchDescription": "OpenBSD\u662f\u52a0\u62ff\u5927OpenBSD\u9879\u76ee\u7ec4\u7684\u4e00\u5957\u8de8\u5e73\u53f0\u7684\u3001\u57fa\u4e8eBSD\u7684\u7c7bUNIX\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nOpenBSD 6.6\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u6743\u9650\u63d0\u5347\u81f3root\uff0c\u8fdb\u800c\u4ee5\u8be5\u6743\u9650\u6267\u884c\u81ea\u5df1\u7684\u5e93\u4ee3\u7801\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": "OpenBSD\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "OpenBSD OpenBSD \u003c=6.6"
  },
  "referenceLink": "https://www.openbsd.org/errata66.html\r\nhttps://www.openwall.com/lists/oss-security/2019/12/11/9",
  "serverity": "\u9ad8",
  "submitTime": "2019-12-12",
  "title": "OpenBSD\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2019-19726 (GCVE-0-2019-19726)

Vulnerability from cvelistv5

Published

2019-12-12 00:00

Modified

2024-08-05 02:25

Severity ?

CWE

Summary

OpenBSD through 6.6 allows local users to escalate to root because a check for LD_LIBRARY_PATH in setuid programs can be defeated by setting a very small RLIMIT_DATA resource limit. When executing chpass or passwd (which are setuid root), _dl_setup_env in ld.so tries to strip LD_LIBRARY_PATH from the environment, but fails when it cannot allocate memory. Thus, the attacker is able to execute their own library code as root.

References

▼	URL	Tags
	https://www.openbsd.org/errata66.html
	https://www.openwall.com/lists/oss-security/2019/12/11/9
	https://seclists.org/bugtraq/2019/Dec/25	mailing-list
	http://packetstormsecurity.com/files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html
	http://seclists.org/fulldisclosure/2019/Dec/31	mailing-list
	http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html
	http://www.openwall.com/lists/oss-security/2023/10/03/2	mailing-list
	http://seclists.org/fulldisclosure/2023/Oct/11	mailing-list
	http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html

Impacted products

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

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:25:12.567Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://seclists.org/bugtraq/2019/Dec/25"
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            ],
            "url": "http://packetstormsecurity.com/files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html"
          },
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            "name": "[oss-security] 20231003 CVE-2023-4911: Local Privilege Escalation in the glibc\u0027s ld.so",
            "tags": [
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            "url": "http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html"
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        "title": "CVE Program Container"
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    ],
    "cna": {
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          "vendor": "n/a",
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        },
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          "url": "http://packetstormsecurity.com/files/174986/glibc-ld.so-Local-Privilege-Escalation.html"
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    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}

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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