ssa-794185
Vulnerability from csaf_siemens
Published
2025-05-13 00:00
Modified
2025-08-12 00:00
Summary
SSA-794185: RADIUS Protocol Susceptible to Forgery Attacks (CVE-2024-3596) - Impact to SIPROTEC, SICAM and Related Products
Notes
Summary
This advisory documents the impact of CVE-2024-3596 (also dubbed "Blastradius"), a vulnerability in the RADIUS protocol, to SIPROTEC, SICAM and related products.
The vulnerability could allow on-path attackers, located between a Network Access Server (the RADIUS client, e.g., a SICAM device) and a RADIUS server, to forge Access-Request packets in a way that enables them to modify the corresponding server response packet at will, e.g., turning an "Access-Reject" message into an "Access-Accept". This would cause the Network Access Server to grant the attackers access to the network with the attackers desired authorization (and without the need of knowing or guessing legitimate access credentials).
Further details incl. external references can be found in the chapter "Additional Information".
Siemens has released new versions for several affected products and recommends to update to the latest versions, and to configure the updated systems as recommended in the chapter "Additional Information".
Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available. See chapter "Additional Information" for details.
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
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
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"text": "This advisory documents the impact of CVE-2024-3596 (also dubbed \"Blastradius\"), a vulnerability in the RADIUS protocol, to SIPROTEC, SICAM and related products.\n\nThe vulnerability could allow on-path attackers, located between a Network Access Server (the RADIUS client, e.g., a SICAM device) and a RADIUS server, to forge Access-Request packets in a way that enables them to modify the corresponding server response packet at will, e.g., turning an \"Access-Reject\" message into an \"Access-Accept\". This would cause the Network Access Server to grant the attackers access to the network with the attackers desired authorization (and without the need of knowing or guessing legitimate access credentials).\n\nFurther details incl. external references can be found in the chapter \"Additional Information\".\nSiemens has released new versions for several affected products and recommends to update to the latest versions, and to configure the updated systems as recommended in the chapter \"Additional Information\".\nSiemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available. See chapter \"Additional Information\" for details.",
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}
],
"category": "product_name",
"name": "SIPROTEC 5 7UT82 (CP100)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003c10.0",
"product": {
"name": "SIPROTEC 5 7UT82 (CP150)",
"product_id": "51"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7UT82 (CP150)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003e=7.80|\u003c10.0",
"product": {
"name": "SIPROTEC 5 7UT85 (CP300)",
"product_id": "52"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7UT85 (CP300)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003e=7.80|\u003c10.0",
"product": {
"name": "SIPROTEC 5 7UT86 (CP300)",
"product_id": "53"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7UT86 (CP300)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003e=7.80|\u003c10.0",
"product": {
"name": "SIPROTEC 5 7UT87 (CP300)",
"product_id": "54"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7UT87 (CP300)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003e=7.80|\u003c10.0",
"product": {
"name": "SIPROTEC 5 7VE85 (CP300)",
"product_id": "55"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7VE85 (CP300)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003e=7.80|\u003c10.0",
"product": {
"name": "SIPROTEC 5 7VK87 (CP300)",
"product_id": "56"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7VK87 (CP300)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003c10.0",
"product": {
"name": "SIPROTEC 5 7VU85 (CP300)",
"product_id": "57"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 7VU85 (CP300)"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:all/*",
"product": {
"name": "SIPROTEC 5 - CP200 Devices",
"product_id": "58"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 - CP200 Devices"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:intdot/\u003c10.0",
"product": {
"name": "SIPROTEC 5 Compact 7SX800 (CP050)",
"product_id": "59"
}
}
],
"category": "product_name",
"name": "SIPROTEC 5 Compact 7SX800 (CP050)"
}
],
"category": "vendor",
"name": "Siemens"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2024-3596",
"cwe": {
"id": "CWE-924",
"name": "Improper Enforcement of Message Integrity During Transmission in a Communication Channel"
},
"flags": [
{
"label": "vulnerable_code_not_present",
"product_ids": [
"9",
"7",
"6",
"11",
"58"
]
},
{
"label": "vulnerable_code_not_in_execute_path",
"product_ids": [
"8"
]
}
],
"notes": [
{
"category": "summary",
"text": "RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify responses Access-Reject or Access-Accept using a chosen-prefix collision attack against MD5 Response Authenticator signature.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"1",
"2",
"3",
"4",
"5",
"10",
"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",
"47",
"48",
"49",
"50",
"51",
"52",
"53",
"54",
"55",
"56",
"57",
"59"
],
"known_not_affected": [
"6",
"7",
"8",
"9",
"11",
"58"
]
},
"remediations": [
{
"category": "mitigation",
"details": "Restrict access to the networks where RADIUS messages are exchanged (e.g., send RADIUS traffic via management network or a dedicated VLAN)",
"product_ids": [
"1",
"2",
"3",
"4",
"5",
"10",
"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",
"47",
"48",
"49",
"50",
"51",
"52",
"53",
"54",
"55",
"56",
"57",
"59"
]
},
{
"category": "mitigation",
"details": "Con\ufb01gure the RADIUS server to require the presence of a Message-Authenticator attribute in all Access-Request packets from RADIUS client devices that support it",
"product_ids": [
"1",
"2",
"3",
"4",
"5",
"10",
"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",
"47",
"48",
"49",
"50",
"51",
"52",
"53",
"54",
"55",
"56",
"57",
"59"
]
},
{
"category": "none_available",
"details": "Currently no fix is available",
"product_ids": [
"5",
"20",
"24",
"28",
"30",
"34",
"37",
"50"
]
},
{
"category": "vendor_fix",
"details": "Update to V10.0 or later version",
"product_ids": [
"13",
"14",
"15",
"16",
"18",
"19",
"22",
"23",
"26",
"27",
"32",
"33",
"36",
"39",
"40",
"41",
"42",
"44",
"47",
"49",
"52",
"53",
"54",
"55",
"56",
"57"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109814150/"
},
{
"category": "vendor_fix",
"details": "Update to V10.0 or later version",
"product_ids": [
"21",
"25",
"29",
"31",
"35",
"38",
"46",
"48",
"51"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109757433/"
},
{
"category": "vendor_fix",
"details": "Update to V10.0 or later version",
"product_ids": [
"59"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109796884/"
},
{
"category": "vendor_fix",
"details": "Update to V16.51 or later version",
"product_ids": [
"1"
]
},
{
"category": "vendor_fix",
"details": "Update to V2.20.0 or later version",
"product_ids": [
"12"
]
},
{
"category": "vendor_fix",
"details": "Update to V2.50 or later version",
"product_ids": [
"10"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109763384/"
},
{
"category": "vendor_fix",
"details": "Update to V2.70 or later version",
"product_ids": [
"3"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109743524/"
},
{
"category": "vendor_fix",
"details": "Update to V2.83 or later version",
"product_ids": [
"4"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109743592/"
},
{
"category": "vendor_fix",
"details": "Update to V6.20 or later version",
"product_ids": [
"2"
]
},
{
"category": "vendor_fix",
"details": "Update to V9.68 or later version",
"product_ids": [
"17"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109742950/"
},
{
"category": "vendor_fix",
"details": "Update to V9.68 or later version",
"product_ids": [
"43"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109740299/"
},
{
"category": "vendor_fix",
"details": "Update to V9.83 or later version",
"product_ids": [
"45"
],
"url": "https://support.industry.siemens.com/cs/ww/en/view/109768428/"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 9.0,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"1",
"2",
"3",
"4",
"5",
"10",
"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",
"47",
"48",
"49",
"50",
"51",
"52",
"53",
"54",
"55",
"56",
"57",
"59"
]
}
],
"threats": [
{
"category": "impact",
"details": "The product does not support the RADIUS protocol.",
"product_ids": [
"9",
"7",
"6",
"11",
"58"
]
},
{
"category": "impact",
"details": "The product includes a component which also supports the RADIUS protocol, but the product doesn\u0027t enable or support RADIUS.",
"product_ids": [
"8"
]
}
],
"title": "CVE-2024-3596"
}
]
}
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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.
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