ssa-322980
Vulnerability from csaf_siemens
Published
2023-04-11 00:00
Modified
2024-05-14 00:00
Summary
SSA-322980: Denial of Service Vulnerability in SIPROTEC 5 Devices
Notes
Summary
SIPROTEC 5 devices contain a null pointer dereference vulnerability in the web service. This could allow an attacker to send unauthenticated maliciously crafted http request that could cause denial of service condition of the device.
Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
General Recommendations
Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design.
Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment.
As a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.
Recommended security guidelines can be found at:
https://www.siemens.com/gridsecurity
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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"text": "SIPROTEC 5 devices contain a null pointer dereference vulnerability in the web service. This could allow an attacker to send unauthenticated maliciously crafted http request that could cause denial of service condition of the device. \n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.",
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"vulnerabilities": [
{
"cve": "CVE-2023-28766",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"notes": [
{
"category": "summary",
"text": "Affected devices lack proper validation of http request parameters of the hosted web service.\r\nAn unauthenticated remote attacker could send specially crafted packets that could cause denial of service condition of the target device.",
"title": "Summary"
}
],
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"18",
"19",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29",
"30",
"31",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"39",
"40",
"41",
"42",
"43",
"44",
"45",
"46"
]
},
"remediations": [
{
"category": "mitigation",
"details": "Block access to port 4443/tcp e.g. with an external firewall",
"product_ids": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29",
"30",
"31",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"39",
"40",
"41",
"42",
"43",
"44",
"45",
"46"
]
},
{
"category": "mitigation",
"details": "Disable web service using port 4443 for SIPROTEC 5 if it is not needed",
"product_ids": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29",
"30",
"31",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"39",
"40",
"41",
"42",
"43",
"44",
"45",
"46"
]
},
{
"category": "none_available",
"details": "Currently no fix is available",
"product_ids": [
"6",
"10",
"23",
"33"
]
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"46"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109796884/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"7",
"8",
"9",
"11",
"12",
"13",
"19",
"24",
"39"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"15",
"17",
"18"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109751934/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"21",
"22"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757434/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"34",
"35",
"36"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757438/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"4"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109765263/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"30",
"31"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109768011/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"5"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757430/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"25",
"26"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"27"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757429/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"32"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757431/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"37"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757438/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"38"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109749865/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"1",
"2"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757428/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"41",
"43",
"45"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109740816/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"40"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109800399/"
},
{
"category": "vendor_fix",
"details": "Update to V9.40 or later version",
"product_ids": [
"29"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109768428/"
},
{
"category": "vendor_fix",
"details": "Update to V9.64 or later version",
"product_ids": [
"28"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109740299/"
},
{
"category": "vendor_fix",
"details": "Update to V9.64 or later version",
"product_ids": [
"3"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109742950/"
},
{
"category": "vendor_fix",
"details": "Update to V8.89 or later V8.xx version",
"product_ids": [
"14",
"16",
"20",
"42",
"44"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"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"
},
"products": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"23",
"24",
"25",
"26",
"27",
"28",
"29",
"30",
"31",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"39",
"40",
"41",
"42",
"43",
"44",
"45",
"46"
]
}
],
"title": "CVE-2023-28766"
}
]
}
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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.