Vulnerability-Lookup

CNVD-2022-13364

Vulnerability from cnvd - Published: 2022-02-23

Title

snapd竞争条件问题漏洞

Description

Snapd是开源的一个跨平台的包管理工具。 snapd存在竞争条件问题漏洞，本地攻击者可利用该漏洞通过在snap的私有挂载名称空间中绑定挂载自己的内容，从而获得根权限，并执行任意代码，从而获得权限升级。

Severity

中

Patch Name

snapd竞争条件问题漏洞的补丁

Patch Description

Snapd是开源的一个跨平台的包管理工具。 snapd存在竞争条件问题漏洞，本地攻击者可利用该漏洞通过在snap的私有挂载名称空间中绑定挂载自己的内容，从而获得根权限，并执行任意代码，从而获得权限升级。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://ubuntu.com/security/notices/USN-5292-1

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-44731

Impacted products

Name
snapd snapd 2.54.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-44731"
    }
  },
  "description": "Snapd\u662f\u5f00\u6e90\u7684\u4e00\u4e2a\u8de8\u5e73\u53f0\u7684\u5305\u7ba1\u7406\u5de5\u5177\u3002\n\nsnapd\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5728snap\u7684\u79c1\u6709\u6302\u8f7d\u540d\u79f0\u7a7a\u95f4\u4e2d\u7ed1\u5b9a\u6302\u8f7d\u81ea\u5df1\u7684\u5185\u5bb9\uff0c\u4ece\u800c\u83b7\u5f97\u6839\u6743\u9650\uff0c\u5e76\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u4ece\u800c\u83b7\u5f97\u6743\u9650\u5347\u7ea7\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://ubuntu.com/security/notices/USN-5292-1",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-13364",
  "openTime": "2022-02-23",
  "patchDescription": "Snapd\u662f\u5f00\u6e90\u7684\u4e00\u4e2a\u8de8\u5e73\u53f0\u7684\u5305\u7ba1\u7406\u5de5\u5177\u3002\r\n\r\nsnapd\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u5728snap\u7684\u79c1\u6709\u6302\u8f7d\u540d\u79f0\u7a7a\u95f4\u4e2d\u7ed1\u5b9a\u6302\u8f7d\u81ea\u5df1\u7684\u5185\u5bb9\uff0c\u4ece\u800c\u83b7\u5f97\u6839\u6743\u9650\uff0c\u5e76\u6267\u884c\u4efb\u610f\u4ee3\u7801\uff0c\u4ece\u800c\u83b7\u5f97\u6743\u9650\u5347\u7ea7\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": "snapd\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "snapd snapd 2.54.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-44731",
  "serverity": "\u4e2d",
  "submitTime": "2022-02-18",
  "title": "snapd\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2021-44731 (GCVE-0-2021-44731)

Vulnerability from cvelistv5 – Published: 2022-02-17 00:00 – Updated: 2024-08-04 04:32

Title

snapd could be made to escalate privileges and run programs as administrator

Summary

A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-362 - Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization)

Assigner

canonical mitre root

References

10 references

URL	Tags
https://ubuntu.com/security/notices/USN-5292-1
http://www.openwall.com/lists/oss-security/2022/02/18/2	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.debian.org/security/2022/dsa-5080	vendor-advisory
http://www.openwall.com/lists/oss-security/2022/02/23/1	mailing-list
http://www.openwall.com/lists/oss-security/2022/02/23/2	mailing-list
http://www.openwall.com/lists/oss-security/2022/11/30/2	mailing-list
http://seclists.org/fulldisclosure/2022/Dec/4	mailing-list
http://packetstormsecurity.com/files/170176/snap-…

Impacted products

1 product

Vendor	Product	Version
Canonical Ltd.	snapd	Affected: unspecified , ≤ 2.54.2 (custom)

Credits

Qualys Research Team

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.