Vulnerability-Lookup

CNVD-2020-60515

Vulnerability from cnvd - Published: 2020-11-04

Title

Google Cloud Platform guest-oslogin权限提升漏洞（CNVD-2020-60515）

Description

Google Cloud Platform是美国谷歌（Google）的一款能够提供云计算、数据存储、数据分析及机器学习等服务的云计算平台。guest-oslogin是其中的一个操作系统登录组件。 Google Cloud Platform中的guest-oslogin 20190304版本至20200507之前版本中存在安全漏洞。攻击者可利用该漏洞将权限提升至root。

Severity

中

Patch Name

Google Cloud Platform guest-oslogin权限提升漏洞（CNVD-2020-60515）的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29/commits/885cad28e1abb67956e596984af1888f54e7d6af

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-8903

Impacted products

Name
Google Cloud Platform >=20190304，<=20200507

Show details on source website

JSON

To clipboard

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  "title": "Google Cloud Platform guest-oslogin\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2020-60515\uff09"
}

CVE-2020-8903 (GCVE-0-2020-8903)

Vulnerability from cvelistv5 – Published: 2020-06-22 13:45 – Updated: 2024-08-04 10:12

Title

Priviged Escalation in Google Cloud Platform's Guest-OSLogin

Summary

A vulnerability in Google Cloud Platform's guest-oslogin versions between 20190304 and 20200507 allows a user that is only granted the role "roles/compute.osLogin" to escalate privileges to root. Using their membership to the "adm" group, users with this role are able to read the DHCP XID from the systemd journal. Using the DHCP XID, it is then possible to set the IP address and hostname of the instance to any value, which is then stored in /etc/hosts. An attacker can then point metadata.google.internal to an arbitrary IP address and impersonate the GCE metadata server which make it is possible to instruct the OS Login PAM module to grant administrative privileges. All images created after 2020-May-07 (20200507) are fixed, and if you cannot update, we recommend you edit /etc/group/security.conf and remove the "adm" user from the OS Login entry.

Severity

7.3 (High)


                        
                          CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CWE

CWE-276 - Incorrect Default Permissions

Assigner

Google Google root

References

5 references

URL	Tags
https://github.com/GoogleCloudPlatform/guest-oslo…	x_refsource_CONFIRM
https://gitlab.com/gitlab-com/gl-security/gl-redt…	x_refsource_MISC
https://cloud.google.com/support/bulletins/#gcp-2…	x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

Impacted products

1 product

Vendor	Product	Version
Google LLC	guest-oslogin	Affected: 20190304 , < 20200507 (date) Unaffected: 20200507 (date)

Credits

Chris Moberly

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.