SSA-978220
Vulnerability from csaf_siemens - Published: 2020-02-11 00:00 - Updated: 2023-04-11 00:00Summary
SSA-978220: Denial of Service Vulnerability over SNMP in Multiple Industrial Products
Notes
Summary
Several industrial products are affected by a vulnerability that could allow remote attackers to conduct a denial of service attack by sending specially crafted packets to port 161/udp (SNMP).
Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.
General Recommendations
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' operational guidelines for Industrial Security (Download:
https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.
Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
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},
"vulnerabilities": [
{
"cve": "CVE-2015-5621",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"notes": [
{
"category": "summary",
"text": "An error in the message handling of SNMP messages allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted packet sent on port 161/udp (SNMP).\r\n\r\nThe security vulnerability could be exploited by an attacker with network access to the affected device.\r\nSuccessful exploitation requires no system privileges and no user interaction.\r\nAn attacker could use the vulnerability to compromise availability of the affected system.",
"title": "Summary"
}
],
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"2",
"3",
"4",
"5",
"6",
"7",
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"10",
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"14",
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"7",
"8",
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"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19"
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},
{
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"details": "Use VPN for protecting network communication between cells",
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"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
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"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19"
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"12",
"15",
"16"
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"url": "https://support.industry.siemens.com/cs/ww/en/view/109775589/"
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],
"scores": [
{
"cvss_v3": {
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
"version": "3.1"
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"14",
"15",
"16",
"17",
"18",
"19"
]
}
],
"title": "CVE-2015-5621"
},
{
"cve": "CVE-2018-18065",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"notes": [
{
"category": "summary",
"text": "A NULL Pointer Exception bug within the SMNP handling code allows authenticated attacker to remotely\r\ncause a denial of service via a crafted packet sent on port 161/udp (SNMP).\r\n\r\nThe security vulnerability could be exploited by an attacker with network access to the affected device.\r\nSuccessful exploitation requires no system privileges and no user interaction.\r\nAn attacker could use the vulnerability to compromise availability of the affected system.",
"title": "Summary"
}
],
"product_status": {
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"2",
"3",
"4",
"5",
"6",
"7",
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"12",
"13",
"14",
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"17",
"18",
"19"
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},
"remediations": [
{
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"details": "Disable SNMP if supported by the product; disabling SNMP fully mitigates the vulnerability",
"product_ids": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
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"17",
"18",
"19"
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},
{
"category": "mitigation",
"details": "Protect network access to port 161/udp of affected devices",
"product_ids": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
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"9",
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"14",
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"2",
"3",
"4",
"5"
]
},
{
"category": "vendor_fix",
"details": "The updated firmware is contained in SIMATIC NET PC Software V14 Update 14 or later version or SIMATIC NET PC Software V16 or later version",
"product_ids": [
"6"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109775589/"
},
{
"category": "vendor_fix",
"details": "Update to V1.1.1 or later version",
"product_ids": [
"7"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109792924/"
},
{
"category": "vendor_fix",
"details": "Update to SIMATIC NET PC Software V16 or later version",
"product_ids": [
"8"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109775589/"
},
{
"category": "vendor_fix",
"details": "Update to V2.0 or later version",
"product_ids": [
"18",
"19"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109774204/"
},
{
"category": "vendor_fix",
"details": "Update to V4.0.1 or later version",
"product_ids": [
"1",
"17"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109780330/"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19"
]
}
],
"title": "CVE-2018-18065"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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