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CERTFR-2021-AVI-599
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans les produits Siemens. Elles permettent à un attaquant de provoquer un contournement de la politique de sécurité.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "SENTRON 3WL COM35 versions ant\u00e9rieures \u00e0 1.2.0",
"product": {
"name": "N/A",
"vendor": {
"name": "Siemens",
"scada": true
}
}
},
{
"description": "SENTRON 7KM PAC Switched Ethernet PROFINET Expansion Module versions ant\u00e9rieures \u00e0 3.0.4",
"product": {
"name": "N/A",
"vendor": {
"name": "Siemens",
"scada": true
}
}
},
{
"description": "SENTRON 3WA COM190 versions ant\u00e9rieures \u00e0 2.0.0",
"product": {
"name": "N/A",
"vendor": {
"name": "Siemens",
"scada": true
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2021-31401",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-31401"
},
{
"name": "CVE-2020-35685",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-35685"
},
{
"name": "CVE-2020-35683",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-35683"
},
{
"name": "CVE-2020-35684",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-35684"
}
],
"initial_release_date": "2021-08-04T00:00:00",
"last_revision_date": "2021-08-04T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-599",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-08-04T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits\nSiemens. Elles permettent \u00e0 un attaquant de provoquer un contournement\nde la politique de s\u00e9curit\u00e9.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Siemens",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 [SCADA] Siemens ssa-789208 du 4 ao\u00fbt 2021",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf"
}
]
}
CVE-2020-35684 (GCVE-0-2020-35684)
Vulnerability from cvelistv5
Published
2021-08-19 11:19
Modified
2024-08-04 17:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in HCC Nichestack 3.0. The code that parses TCP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the length of the TCP payload within the TCP checksum computation function. When the IP payload size is set to be smaller than the size of the IP header, the TCP checksum computation function may read out of bounds (a low-impact write-out-of-bounds is also possible).
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-35683 (GCVE-0-2020-35683)
Vulnerability from cvelistv5
Published
2021-08-19 11:13
Modified
2024-08-04 17:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in HCC Nichestack 3.0. The code that parses ICMP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the ICMP checksum. When the IP payload size is set to be smaller than the size of the IP header, the ICMP checksum computation function may read out of bounds, causing a Denial-of-Service.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-35685 (GCVE-0-2020-35685)
Vulnerability from cvelistv5
Published
2021-08-19 11:21
Modified
2024-08-04 17:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers (ISNs) for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing ones or spoof future ones. (Proper ISN generation should aim to follow at least the specifications outlined in RFC 6528.)
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2021-31401 (GCVE-0-2021-31401)
Vulnerability from cvelistv5
Published
2021-08-19 11:25
Modified
2024-08-03 22:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn't sanitize the value of the IP total length field (header length + data length). With a crafted IP packet, an integer overflow occurs whenever the value of the IP data length is calculated by subtracting the length of the header from the total length of the IP packet.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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