Vulnerability-Lookup

CNVD-2020-03762

Vulnerability from cnvd - Published: 2020-02-05

Title

Cisco IOS XR BGP属性拒绝服务漏洞

Description

Cisco IOS XR软件是用于服务提供商网络的模块化和完全分布式的网络操作系统。 Cisco IOS XR的边界网关协议(BGP)功能存在拒绝服务漏洞。该漏洞源于对包含特定BGP属性的BGP更新消息的处理不当。远程未认证攻击者可通过发送包含特定畸形属性的BGP更新消息利用该漏洞导致BGP进程意外重新启动，从而可导致拒绝服务。

Severity

中

Patch Name

Cisco IOS XR BGP属性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-20200122-ios-xr-bgp-dos

Reference

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-bgp-dos

Impacted products

Name
Cisco IOS XR

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-15989",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-15989"
    }
  },
  "description": "Cisco IOS XR\u8f6f\u4ef6\u662f\u7528\u4e8e\u670d\u52a1\u63d0\u4f9b\u5546\u7f51\u7edc\u7684\u6a21\u5757\u5316\u548c\u5b8c\u5168\u5206\u5e03\u5f0f\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS XR\u7684\u8fb9\u754c\u7f51\u5173\u534f\u8bae(BGP)\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u5305\u542b\u7279\u5b9aBGP\u5c5e\u6027\u7684BGP\u66f4\u65b0\u6d88\u606f\u7684\u5904\u7406\u4e0d\u5f53\u3002\u8fdc\u7a0b\u672a\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u5305\u542b\u7279\u5b9a\u7578\u5f62\u5c5e\u6027\u7684BGP\u66f4\u65b0\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4BGP\u8fdb\u7a0b\u610f\u5916\u91cd\u65b0\u542f\u52a8\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-bgp-dos",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-03762",
  "openTime": "2020-02-05",
  "patchDescription": "Cisco IOS XR\u8f6f\u4ef6\u662f\u7528\u4e8e\u670d\u52a1\u63d0\u4f9b\u5546\u7f51\u7edc\u7684\u6a21\u5757\u5316\u548c\u5b8c\u5168\u5206\u5e03\u5f0f\u7684\u7f51\u7edc\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS XR\u7684\u8fb9\u754c\u7f51\u5173\u534f\u8bae(BGP)\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bf9\u5305\u542b\u7279\u5b9aBGP\u5c5e\u6027\u7684BGP\u66f4\u65b0\u6d88\u606f\u7684\u5904\u7406\u4e0d\u5f53\u3002\u8fdc\u7a0b\u672a\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u5305\u542b\u7279\u5b9a\u7578\u5f62\u5c5e\u6027\u7684BGP\u66f4\u65b0\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4BGP\u8fdb\u7a0b\u610f\u5916\u91cd\u65b0\u542f\u52a8\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "Cisco IOS XR BGP\u5c5e\u6027\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cisco IOS XR"
  },
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  "serverity": "\u4e2d",
  "submitTime": "2020-01-23",
  "title": "Cisco IOS XR BGP\u5c5e\u6027\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2019-15989 (GCVE-0-2019-15989)

Vulnerability from cvelistv5 – Published: 2020-01-26 04:30 – Updated: 2024-11-15 17:46

Title

Cisco IOS XR Software Border Gateway Protocol Attribute Denial of Service Vulnerability

Summary

A vulnerability in the implementation of the Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains a specific BGP attribute. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer or would need to be injected by the attacker into the victim’s BGP network on an existing, valid TCP connection to a BGP peer.

Severity

8.6 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-15 16:22 UTC

CWE

CWE-754

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 IOS XR Software	Affected: unspecified , < n/a (custom)

Date Public

2020-01-22 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.