{
	"document":{
		"aggregate_severity":{
			"namespace":"https://nvd.nist.gov/vuln-metrics/cvss",
			"text":"Low"
		},
		"category":"csaf_vex",
		"csaf_version":"2.0",
		"distribution":{
			"tlp":{
				"label":"WHITE",
				"url":"https:/www.first.org/tlp/"
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		},
		"lang":"en",
		"notes":[
			{
				"text":"openvpn security update",
				"category":"general",
				"title":"Synopsis"
			},
			{
				"text":"An update for openvpn is now available for openEuler-20.03-LTS and openEuler-20.03-LTS-SP1.",
				"category":"general",
				"title":"Summary"
			},
			{
				"text":"OpenVPN is a full-featured open source SSL VPN solution that accommodates a wide range of configurations, including remote access, site-to-site VPNs, Wi-Fi security, and enterprise-scale remote access solutions with load balancing, failover, and fine-grained access-controls. Starting with the fundamental premise that complexity is the enemy of security, OpenVPN offers a cost-effective, lightweight alternative to other VPN technologies that is well-adapted for the SME and enterprise markets.\n\nSecurity Fix(es):\n\nAn issue was discovered in OpenVPN 2.4.x before 2.4.9. An attacker can inject a data channel v2 (P_DATA_V2) packet using a victim's peer-id. Normally such packets are dropped, but if this packet arrives before the data channel crypto parameters have been initialized, the victim's connection will be dropped. This requires careful timing due to the small time window (usually within a few seconds) between the victim client connection starting and the server PUSH_REPLY response back to the client. This attack will only work if Negotiable Cipher Parameters (NCP) is in use.(CVE-2020-11810)",
				"category":"general",
				"title":"Description"
			},
			{
				"text":"An update for openvpn is now available for openEuler-20.03-LTS and openEuler-20.03-LTS-SP1.\n\nopenEuler Security has rated this update as having a security impact of low. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.",
				"category":"general",
				"title":"Topic"
			},
			{
				"text":"Low",
				"category":"general",
				"title":"Severity"
			},
			{
				"text":"openvpn",
				"category":"general",
				"title":"Affected Component"
			}
		],
		"publisher":{
			"issuing_authority":"openEuler security committee",
			"name":"openEuler",
			"namespace":"https://www.openeuler.org",
			"contact_details":"openeuler-security@openeuler.org",
			"category":"vendor"
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		"references":[
			{
				"summary":"openEuler-SA-2021-1064",
				"category":"self",
				"url":"https://openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1064"
			},
			{
				"summary":"CVE-2020-11810",
				"category":"self",
				"url":"https://openeuler.org/en/security/cve/detail?cveId=CVE-2020-11810&packageName=openvpn"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11810"
			},
			{
				"summary":"openEuler-SA-2021-1064 vex file",
				"category":"self",
				"url":"https://repo.openeuler.org/security/data/csaf/advisories/2021/csaf-openeuler-sa-2021-1064.json"
			}
		],
		"title":"An update for openvpn is now available for openEuler-20.03-LTS and openEuler-20.03-LTS-SP1",
		"tracking":{
			"initial_release_date":"2021-03-05T09:17:10+08:00",
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					"date":"2021-03-05T09:17:10+08:00",
					"summary":"Initial",
					"number":"1.0.0"
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					"date":"2024-10-31T09:17:10+08:00",
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				"date":"2024-10-31T09:17:10+08:00",
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					"name":"openEuler CSAF Tool V1.0"
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			"current_release_date":"2024-10-31T09:17:10+08:00",
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	"vulnerabilities":[
		{
			"cve":"CVE-2020-11810",
			"notes":[
				{
					"text":"An issue was discovered in OpenVPN 2.4.x before 2.4.9. An attacker can inject a data channel v2 (P_DATA_V2) packet using a victim's peer-id. Normally such packets are dropped, but if this packet arrives before the data channel crypto parameters have been initialized, the victim's connection will be dropped. This requires careful timing due to the small time window (usually within a few seconds) between the victim client connection starting and the server PUSH_REPLY response back to the client. This attack will only work if Negotiable Cipher Parameters (NCP) is in use.",
					"category":"description",
					"title":"Vulnerability Description"
				}
			],
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					],
					"details":"openvpn security update",
					"category":"vendor_fix",
					"url":"https://openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1064"
				}
			],
			"scores":[
				{
					"cvss_v3":{
						"baseSeverity":"LOW",
						"baseScore":3.7,
						"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
						"version":"3.1"
					},
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			"threats":[
				{
					"details":"Low",
					"category":"impact"
				}
			],
			"title":"CVE-2020-11810"
		}
	]
}