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GHSA-WCV6-8JQC-WFCX
Vulnerability from github – Published: 2025-10-15 18:31 – Updated: 2025-10-15 18:31
VLAI?
Details
Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.
This vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned.
Severity ?
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2025-20359"
],
"database_specific": {
"cwe_ids": [
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],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-15T17:15:49Z",
"severity": "MODERATE"
},
"details": "Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.\n\nThis vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned.",
"id": "GHSA-wcv6-8jqc-wfcx",
"modified": "2025-10-15T18:31:51Z",
"published": "2025-10-15T18:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20359"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
}
]
}
CVE-2025-20359 (GCVE-0-2025-20359)
Vulnerability from cvelistv5 – Published: 2025-10-15 16:17 – Updated: 2025-10-15 17:43
VLAI?
EPSS
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.
This vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned.
Severity ?
6.5 (Medium)
CWE
- CWE-127 - Buffer Under-read
Assigner
References
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Cyber Vision |
Affected:
3.0.0
Affected: 3.0.2 Affected: 3.0.3 Affected: 3.0.1 Affected: 3.1.0 Affected: 3.0.4 Affected: 3.1.1 Affected: 3.1.2 Affected: 3.2.0 Affected: 3.0.5 Affected: 3.2.1 Affected: 3.0.6 Affected: 3.2.2 Affected: 3.2.3 Affected: 3.2.4 Affected: 4.0.0 Affected: 4.0.1 Affected: 4.0.2 Affected: 4.0.3 Affected: 4.1.0 Affected: 4.1.1 Affected: 4.1.2 Affected: 4.1.3 Affected: 4.1.4 Affected: 4.2.0 Affected: 4.2.1 Affected: 4.1.5 Affected: 4.2.2 Affected: 4.2.X Affected: 4.2.3 Affected: 4.2.4 Affected: 4.2.6 Affected: 4.1.6 Affected: 4.3.0 Affected: 4.3.1 Affected: 4.3.2 Affected: 4.3.3 Affected: 4.4.0 Affected: 4.4.1 Affected: 4.4.2 Affected: 4.4.3 Affected: 4.1.7 Affected: 5.0.0 Affected: 5.0.1 Affected: 5.0.2 Affected: 5.1.0 Affected: 5.1.1 Affected: 5.1.2 Affected: 5.1.3 Affected: 5.2.0 Affected: 5.2.1 |
||||||||||||
|
||||||||||||||
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},
{
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{
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{
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"status": "affected",
"version": "17.12.2"
},
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"status": "affected",
"version": "17.12.3"
},
{
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{
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],
"descriptions": [
{
"lang": "en",
"value": "Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.\r\n\r\nThis vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"version": "3.1"
},
"format": "cvssV3_1"
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],
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"descriptions": [
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"description": "Buffer Under-read",
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]
}
],
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"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-snort3-mime-vulns-tTL8PgVH",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH"
}
],
"source": {
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"defects": [
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],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Snort 3 MIME Information Disclosure or Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20359",
"datePublished": "2025-10-15T16:17:31.374Z",
"dateReserved": "2024-10-10T19:15:13.258Z",
"dateUpdated": "2025-10-15T17:43:38.689Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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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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