Vulnerability-Lookup

CNVD-2020-21469

Vulnerability from cnvd - Published: 2020-04-05

Title

Apport权限提升漏洞

Description

Apport是一款用于收集并反馈错误信息（当应用程序崩溃时操作系统认为有用的信息）的工具包。 Apport中存在权限提升漏洞，该漏洞源于为创建的lock文件分配了安全的权限。本地攻击者可通过实施符号链接攻击利用该漏洞提升权限。

Severity

中

Patch Name

Apport权限提升漏洞的补丁

Patch Description

Apport是一款用于收集并反馈错误信息（当应用程序崩溃时操作系统认为有用的信息）的工具包。 Apport中存在权限提升漏洞，该漏洞源于为创建的lock文件分配了安全的权限。本地攻击者可通过实施符号链接攻击利用该漏洞提升权限。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

厂商已发布了漏洞修复程序，请及时关注更新： https://usn.ubuntu.com/4315-1/

Reference

https://packetstormsecurity.com/files/157062/Ubuntu-Security-Notice-USN-4315-1.html

Impacted products

Name
Apport Apport 无

Show details on source website

JSON

To clipboard

{
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    "cve": {
      "cveNumber": "CVE-2020-8831",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-8831"
    }
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  "description": "Apport\u662f\u4e00\u6b3e\u7528\u4e8e\u6536\u96c6\u5e76\u53cd\u9988\u9519\u8bef\u4fe1\u606f\uff08\u5f53\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\u65f6\u64cd\u4f5c\u7cfb\u7edf\u8ba4\u4e3a\u6709\u7528\u7684\u4fe1\u606f\uff09\u7684\u5de5\u5177\u5305\u3002\n\nApport\u4e2d\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e3a\u521b\u5efa\u7684lock\u6587\u4ef6\u5206\u914d\u4e86\u5b89\u5168\u7684\u6743\u9650\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5b9e\u65bd\u7b26\u53f7\u94fe\u63a5\u653b\u51fb\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\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://usn.ubuntu.com/4315-1/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-21469",
  "openTime": "2020-04-05",
  "patchDescription": "Apport\u662f\u4e00\u6b3e\u7528\u4e8e\u6536\u96c6\u5e76\u53cd\u9988\u9519\u8bef\u4fe1\u606f\uff08\u5f53\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\u65f6\u64cd\u4f5c\u7cfb\u7edf\u8ba4\u4e3a\u6709\u7528\u7684\u4fe1\u606f\uff09\u7684\u5de5\u5177\u5305\u3002\r\n\r\nApport\u4e2d\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e3a\u521b\u5efa\u7684lock\u6587\u4ef6\u5206\u914d\u4e86\u5b89\u5168\u7684\u6743\u9650\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5b9e\u65bd\u7b26\u53f7\u94fe\u63a5\u653b\u51fb\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\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": "Apport\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Apport Apport \u65e0"
  },
  "referenceLink": "https://packetstormsecurity.com/files/157062/Ubuntu-Security-Notice-USN-4315-1.html",
  "serverity": "\u4e2d",
  "submitTime": "2020-04-04",
  "title": "Apport\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2020-8831 (GCVE-0-2020-8831)

Vulnerability from cvelistv5 – Published: 2020-04-22 21:15 – Updated: 2024-09-16 19:00

Title

World writable root owned lock file created in user controllable location

Summary

Apport creates a world writable lock file with root ownership in the world writable /var/lock/apport directory. If the apport/ directory does not exist (this is not uncommon as /var/lock is a tmpfs), it will create the directory, otherwise it will simply continue execution using the existing directory. This allows for a symlink attack if an attacker were to create a symlink at /var/lock/apport, changing apport's lock file location. This file could then be used to escalate privileges, for example. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.

Severity

6.5 (Medium)


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

CWE

CWE-379 - Creation of Temporary File in Directory with Incorrect Permissions

Assigner

canonical mitre root

References

3 references

URL	Tags
https://launchpad.net/bugs/1862348	x_refsource_CONFIRM
https://usn.ubuntu.com/4315-1/	x_refsource_CONFIRM
https://usn.ubuntu.com/4315-2/	vendor-advisoryx_refsource_UBUNTU

Impacted products

1 product

Vendor	Product	Version
Canonical	Apport	Affected: 2.20.1 , < 2.20.1-0ubuntu2.23 (custom) Affected: 2.20.9 , < 2.20.9-0ubuntu7.14 (custom) Affected: 2.20.11 , < 2.20.11-0ubuntu8.8 (custom)

Date Public

2020-04-02 00:00

Credits

Maximilien Bourgeteau

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.

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.

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CNVD-2020-21469

CVE-2020-8831 (GCVE-0-2020-8831)

Tags

Sightings

Nomenclature

Related by attack behaviour