ICSA-21-131-03
Vulnerability from csaf_cisa
Published
2021-05-11 00:00
Modified
2022-08-18 00:00
Summary
Siemens Linux-based Products (Update J)
Notes
CISA Disclaimer
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.
Risk evaluation
Successful exploitation of this vulnerability could compromise confidentiality and integrity.
Critical infrastructure sectors
Multiple Sectors
Countries/areas deployed
Worldwide
Company headquarters location
Germany
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Exploitability
No known public exploits specifically target this vulnerability. This vulnerability has a high attack complexity.
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"name": "\u003e= V3.1.39 and \u003c V3.3.46",
"product": {
"name": "SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0)",
"product_id": "CSAFPID-00030",
"product_identification_helper": {
"model_numbers": [
"6AG2243-1BX30-1XE0"
]
}
}
}
],
"category": "product_name",
"name": "SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c V2.2 Update 1",
"product": {
"name": "SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0)",
"product_id": "CSAFPID-00031",
"product_identification_helper": {
"model_numbers": [
"6AG1543-1MX00-7XE0"
]
}
}
}
],
"category": "product_name",
"name": "SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c V2.2 Update 1",
"product": {
"name": "TIM 1531 IRC (6GK7543-1MX00-0XE0)",
"product_id": "CSAFPID-00032",
"product_identification_helper": {
"model_numbers": [
"6GK7543-1MX00-0XE0"
]
}
}
}
],
"category": "product_name",
"name": "TIM 1531 IRC (6GK7543-1MX00-0XE0)"
}
],
"category": "vendor",
"name": "Siemens"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2020-25705",
"cwe": {
"id": "CWE-330",
"name": "Use of Insufficiently Random Values"
},
"notes": [
{
"category": "summary",
"text": "A flaw in ICMP packets in the Linux kernel was found to allow to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass source port UDP randomization. Software that relies on UDP source port randomization are indirectly affected as well. Kernel versions before 5.10 may be vulnerable to this issue.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005",
"CSAFPID-0006",
"CSAFPID-0007",
"CSAFPID-0008",
"CSAFPID-0009",
"CSAFPID-00010",
"CSAFPID-00011",
"CSAFPID-00012",
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00015",
"CSAFPID-00016",
"CSAFPID-00017",
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023",
"CSAFPID-00024",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027",
"CSAFPID-00028",
"CSAFPID-00029",
"CSAFPID-00030",
"CSAFPID-00031",
"CSAFPID-00032"
]
},
"references": [
{
"category": "external",
"summary": "web.nvd.nist.gov",
"url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25705"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
}
],
"remediations": [
{
"category": "mitigation",
"details": "Use name servers inside corporate environments",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005",
"CSAFPID-0006",
"CSAFPID-0007",
"CSAFPID-0008",
"CSAFPID-0009",
"CSAFPID-00010",
"CSAFPID-00011",
"CSAFPID-00012",
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00015",
"CSAFPID-00016",
"CSAFPID-00017",
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023",
"CSAFPID-00024",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027",
"CSAFPID-00028",
"CSAFPID-00029",
"CSAFPID-00030",
"CSAFPID-00031",
"CSAFPID-00032"
]
},
{
"category": "mitigation",
"details": "Restrict access of CLI and web-based management interfaces for the affected devices to a dedicated layer 2 segment/VLAN and/or controlled by firewall policies at layer 3 where possible",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005",
"CSAFPID-0006",
"CSAFPID-0007",
"CSAFPID-0008",
"CSAFPID-0009",
"CSAFPID-00010",
"CSAFPID-00011",
"CSAFPID-00012",
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00015",
"CSAFPID-00016",
"CSAFPID-00017",
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023",
"CSAFPID-00024",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027",
"CSAFPID-00028",
"CSAFPID-00029",
"CSAFPID-00030",
"CSAFPID-00031",
"CSAFPID-00032"
]
},
{
"category": "mitigation",
"details": "Disable outgoing ICMP packets by using \"service ACLs\" to implement blocking rules",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005",
"CSAFPID-0006",
"CSAFPID-0007",
"CSAFPID-0008",
"CSAFPID-0009",
"CSAFPID-00010",
"CSAFPID-00011",
"CSAFPID-00012",
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00015",
"CSAFPID-00016",
"CSAFPID-00017",
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023",
"CSAFPID-00024",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027",
"CSAFPID-00028",
"CSAFPID-00029",
"CSAFPID-00030",
"CSAFPID-00031",
"CSAFPID-00032"
]
},
{
"category": "vendor_fix",
"details": "Update to V2.2.28 or later version",
"product_ids": [
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00016",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109817067/"
},
{
"category": "vendor_fix",
"details": "Update to V6.4 or later version",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109794349/"
},
{
"category": "vendor_fix",
"details": "Update to V3.0 SP1 or later version",
"product_ids": [
"CSAFPID-00024"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109793790/"
},
{
"category": "vendor_fix",
"details": "Update to V2.1.3 or later version",
"product_ids": [
"CSAFPID-0004"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109793041/"
},
{
"category": "vendor_fix",
"details": "Update to V8.7.1.3 or later version",
"product_ids": [
"CSAFPID-0005"
],
"url": "https://support.industry.siemens.com/cs/de/en/view/109802805/"
},
{
"category": "vendor_fix",
"details": "Update to V3.3 or later version",
"product_ids": [
"CSAFPID-00010",
"CSAFPID-00011"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109799584/"
},
{
"category": "vendor_fix",
"details": "Update to V3.3.46 or later version",
"product_ids": [
"CSAFPID-0009",
"CSAFPID-00012",
"CSAFPID-00029",
"CSAFPID-00030"
],
"url": "https://support.industry.siemens.com/cs/us/en/view/109812218/"
},
{
"category": "vendor_fix",
"details": "Update to V3.0 or later version",
"product_ids": [
"CSAFPID-00015"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109800773"
},
{
"category": "vendor_fix",
"details": "Update to V1.1 or later version",
"product_ids": [
"CSAFPID-00017"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109811116/"
},
{
"category": "vendor_fix",
"details": "Update to V2.2 Update 1 or later version",
"product_ids": [
"CSAFPID-00031",
"CSAFPID-00032"
],
"url": "https://support.industry.siemens.com/cs/de/en/view/109803672/"
},
{
"category": "vendor_fix",
"details": "Update to V1.6 or later version",
"product_ids": [
"CSAFPID-0006",
"CSAFPID-0007"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109803418/"
},
{
"category": "vendor_fix",
"details": "Update to V3.1 or later version",
"product_ids": [
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023"
],
"url": "https://support.industry.siemens.com/cs/de/en/view/109804366"
},
{
"category": "vendor_fix",
"details": "Update to V3.3 or later version",
"product_ids": [
"CSAFPID-0008",
"CSAFPID-00028"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109799604/"
},
{
"category": "mitigation",
"details": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005",
"CSAFPID-0006",
"CSAFPID-0007",
"CSAFPID-0008",
"CSAFPID-0009",
"CSAFPID-00010",
"CSAFPID-00011",
"CSAFPID-00012",
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00015",
"CSAFPID-00016",
"CSAFPID-00017",
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023",
"CSAFPID-00024",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027",
"CSAFPID-00028",
"CSAFPID-00029",
"CSAFPID-00030",
"CSAFPID-00031",
"CSAFPID-00032"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-0001",
"CSAFPID-0002",
"CSAFPID-0003",
"CSAFPID-0004",
"CSAFPID-0005",
"CSAFPID-0006",
"CSAFPID-0007",
"CSAFPID-0008",
"CSAFPID-0009",
"CSAFPID-00010",
"CSAFPID-00011",
"CSAFPID-00012",
"CSAFPID-00013",
"CSAFPID-00014",
"CSAFPID-00015",
"CSAFPID-00016",
"CSAFPID-00017",
"CSAFPID-00018",
"CSAFPID-00019",
"CSAFPID-00020",
"CSAFPID-00021",
"CSAFPID-00022",
"CSAFPID-00023",
"CSAFPID-00024",
"CSAFPID-00025",
"CSAFPID-00026",
"CSAFPID-00027",
"CSAFPID-00028",
"CSAFPID-00029",
"CSAFPID-00030",
"CSAFPID-00031",
"CSAFPID-00032"
]
}
],
"title": "CVE-2020-25705"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.