Vulnerability-Lookup

CNVD-2020-72732

Vulnerability from cnvd - Published: 2020-12-19

Title

Cisco FXOS安全启动绕过漏洞

Description

Cisco FXOS Software是美国思科（Cisco）公司的一套运行在思科安全设备中的防火墙软件。 Cisco FXOS存在安全漏洞，该漏洞源于安全引导过程的保护不够。攻击者可利用该漏洞破坏信任链，并将代码注入设备的引导过程中，该过程将在每次引导时执行，并在重新引导时保持持久性。

Severity

高

Patch Name

Cisco FXOS安全启动绕过漏洞的补丁

Patch Description

Cisco FXOS Software是美国思科（Cisco）公司的一套运行在思科安全设备中的防火墙软件。 Cisco FXOS存在安全漏洞，该漏洞源于安全引导过程的保护不够。攻击者可利用该漏洞破坏信任链，并将代码注入设备的引导过程中，该过程将在每次引导时执行，并在重新引导时保持持久性。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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbp-XTuPkYTn

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-3455

Impacted products

Name
Cisco FXOS

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2020-3455",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3455"
    }
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  "number": "CNVD-2020-72732",
  "openTime": "2020-12-19",
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  "products": {
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  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-3455",
  "serverity": "\u9ad8",
  "submitTime": "2020-10-26",
  "title": "Cisco FXOS\u5b89\u5168\u542f\u52a8\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2020-3455 (GCVE-0-2020-3455)

Vulnerability from cvelistv5 – Published: 2020-10-21 18:36 – Updated: 2024-11-13 17:48

Title

Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability

Summary

A vulnerability in the secure boot process of Cisco FXOS Software could allow an authenticated, local attacker to bypass the secure boot mechanisms. The vulnerability is due to insufficient protections of the secure boot process. An attacker could exploit this vulnerability by injecting code into a specific file that is then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device which would be executed at each boot and maintain persistence across reboots.

Severity

6.7 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-13 17:17 UTC

CWE

CWE-693

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Firepower Extensible Operating System (FXOS)	Affected: n/a

Date Public

2020-10-21 00:00

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.