GSD-2019-17498
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2019-17498",
"description": "In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.",
"id": "GSD-2019-17498",
"references": [
"https://www.suse.com/security/cve/CVE-2019-17498.html",
"https://access.redhat.com/errata/RHSA-2020:3915",
"https://advisories.mageia.org/CVE-2019-17498.html",
"https://security.archlinux.org/CVE-2019-17498",
"https://linux.oracle.com/cve/CVE-2019-17498.html",
"https://ubuntu.com/security/CVE-2019-17498"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2019-17498"
],
"details": "In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.",
"id": "GSD-2019-17498",
"modified": "2023-12-13T01:23:44.368321Z",
"schema_version": "1.4.0"
}
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}
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"refsource": "MISC",
"url": "https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480"
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{
"name": "https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/",
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"url": "https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/"
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{
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"refsource": "MISC",
"url": "https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498"
},
{
"name": "FEDORA-2019-91529f19e4",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html"
},
{
"name": "[debian-lts-announce] 20191113 [SECURITY] [DLA 1991-1] libssh2 security update",
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},
{
"name": "https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c",
"refsource": "MISC",
"url": "https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c"
},
{
"name": "[debian-lts-announce] 20211217 [SECURITY] [DLA 2848-1] libssh2 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20220909-0004/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20220909-0004/"
},
{
"name": "http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html"
},
{
"name": "[debian-lts-announce] 20230908 [SECURITY] [DLA 3559-1] libssh2 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html"
}
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},
"gitlab.com": {
"advisories": [
{
"affected_range": "(,1.9.0]",
"affected_versions": "All versions up to 1.9.0",
"cvss_v2": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-190",
"CWE-937"
],
"date": "2020-10-14",
"description": "In libssh2 v1.9.0 versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.",
"fixed_versions": [],
"identifier": "CVE-2019-17498",
"identifiers": [
"CVE-2019-17498"
],
"not_impacted": "",
"package_slug": "nuget/libssh2-vc141_xp",
"pubdate": "2019-10-21",
"solution": "Unfortunately, there is no solution available yet.",
"title": "Integer Overflow or Wraparound",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2019-17498"
],
"uuid": "d7c606de-6dae-4b45-967b-6ddecff6eae8"
}
]
},
"nvd.nist.gov": {
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": true
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2
}
},
"lastModifiedDate": "2023-09-08T14:15Z",
"publishedDate": "2019-10-21T22:15Z"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- 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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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