Vulnerability-Lookup

CNVD-2020-49272

Vulnerability from cnvd - Published: 2020-08-28

Title

Palo Alto Networks PAN-OS输入验证错误漏洞（CNVD-2020-49272）

Description

Palo Alto Networks PAN-OS是美国Palo Alto Networks公司的一套为其防火墙设备开发的操作系统。 Palo Alto Networks PAN-OS中存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。攻击者可利用该漏洞造成拒绝服务。

Severity

低

Formal description

目前厂商暂未发布升级补丁解决此安全问题，但提供了临时修复措施，详情请参考链接： https://security.paloaltonetworks.com/CVE-2020-2035

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-2035

Impacted products

Name
['Palo Alto Networks PAN-OS 10.0.', 'Palo Alto Networks PAN-OS 9.1.', 'Palo Alto Networks PAN-OS 9.0.', 'Palo Alto Networks PAN-OS 8.1.']

Show details on source website

JSON

To clipboard

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      "cveNumber": "CVE-2020-2035",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-49272",
  "openTime": "2020-08-28",
  "products": {
    "product": [
      "Palo Alto Networks PAN-OS 10.0.*",
      "Palo Alto Networks PAN-OS 9.1.*",
      "Palo Alto Networks PAN-OS 9.0.*",
      "Palo Alto Networks PAN-OS 8.1.*"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-2035",
  "serverity": "\u4f4e",
  "submitTime": "2020-08-14",
  "title": "Palo Alto Networks PAN-OS\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2020-49272\uff09"
}

CVE-2020-2035 (GCVE-0-2020-2035)

Vulnerability from cvelistv5 – Published: 2020-08-12 17:05 – Updated: 2024-09-17 04:10

Title

PAN-OS: URL filtering policy is not enforced on TLS handshakes for decrypted HTTPS sessions

Summary

When SSL/TLS Forward Proxy Decryption mode has been configured to decrypt the web transactions, the PAN-OS URL filtering feature inspects the HTTP Host and URL path headers for policy enforcement on the decrypted HTTPS web transactions but does not consider Server Name Indication (SNI) field within the TLS Client Hello handshake. This allows a compromised host in a protected network to evade any security policy that uses URL filtering on a firewall configured with SSL Decryption in the Forward Proxy mode. A malicious actor can then use this technique to evade detection of communication on the TLS handshake phase between a compromised host and a remote malicious server. This technique does not increase the risk of a host being compromised in the network. It does not impact the confidentiality or availability of a firewall. This is considered to have a low impact on the integrity of the firewall because the firewall fails to enforce a policy on certain traffic that should have been blocked. This issue does not impact the URL filtering policy enforcement on clear text or encrypted web transactions. This technique can be used only after a malicious actor has compromised a host in the protected network and the TLS/SSL Decryption feature is enabled for the traffic that the attacker controls. Palo Alto Networks is not aware of any malware that uses this technique to exfiltrate data. This issue is applicable to all current versions of PAN-OS. This issue does not impact Panorama or WF-500 appliances.

Severity

3 (Low)


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

CWE

CWE-20 - Improper Input Validation

Assigner

palo_alto mitre root

References

2 references

URL	Tags
https://security.paloaltonetworks.com/CVE-2020-2035	x_refsource_MISC
https://www.mnemonic.no/blog/introducing-snicat/	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Palo Alto Networks	PAN-OS	Affected: 8.1.* Affected: 9.0.* Affected: 9.1.* Affected: 10.0.* Affected: 10.1.*

Date Public

2020-08-12 00:00

Credits

Palo Alto Networks thanks Morten Marstrander and Matteo Malvica from mnemonic AS for discovering and reporting this issue.

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.