Vulnerability-Lookup

CNVD-2021-09943

Vulnerability from cnvd - Published: 2021-02-08

Title

Cisco Elastic Services Controller拒绝服务漏洞

Description

Cisco Elastic Services Controller (ESC)是一个虚拟网络功能管理器（VNFM），用于管理虚拟网络功能（VNF）的生命周期。 Cisco Elastic Services Controller 5.3.0.94及更早版本的系统资源管理存在拒绝服务漏洞。该漏洞源于对最大数量的TCP连接和SYN积压的内核参数配置不足。攻击者可通过发送大量TCP数据包利用该漏洞屏蔽运行状况监视器API使用的TCP侦听端口。

Severity

中

Patch Name

Cisco Elastic Services Controller拒绝服务漏洞的补丁

Patch Description

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-esc-dos-4Gw6D527

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-1312

Impacted products

Name
Cisco Elastic Services Controller <=5.3.0.94

Show details on source website

JSON

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      "cveNumber": "CVE-2021-1312",
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  "products": {
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  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1312",
  "serverity": "\u4e2d",
  "submitTime": "2021-01-21",
  "title": "Cisco Elastic Services Controller\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2021-1312 (GCVE-0-2021-1312)

Vulnerability from cvelistv5 – Published: 2021-01-20 20:01 – Updated: 2024-11-12 20:20

Title

Cisco Elastic Services Controller Denial of Service Vulnerability

Summary

A vulnerability in the system resource management of Cisco Elastic Services Controller (ESC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) to the health monitor API on an affected device. The vulnerability is due to inadequate provisioning of kernel parameters for the maximum number of TCP connections and SYN backlog. An attacker could exploit this vulnerability by sending a flood of crafted TCP packets to an affected device. A successful exploit could allow the attacker to block TCP listening ports that are used by the health monitor API. This vulnerability only affects customers who use the health monitor API.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 20:05 UTC

CWE

CWE-400

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 Elastic Services Controller	Affected: n/a

Date Public

2021-01-20 00:00

Show details on NVD website

JSON

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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.