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5 vulnerabilities found for libssh2 by The libssh2 Project
CVE-2019-3863 (GCVE-0-2019-3863)
Vulnerability from nvd
Published
2019-03-25 17:52
Modified
2025-12-19 03:02
Severity ?
VLAI Severity ?
EPSS score ?
Summary
A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Version: 1.8.1 |
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CVE-2019-3859 (GCVE-0-2019-3859)
Vulnerability from nvd
Published
2019-03-20 21:18
Modified
2025-12-18 11:43
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Version: 1.8.1 |
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CVE-2019-3863 (GCVE-0-2019-3863)
Vulnerability from cvelistv5
Published
2019-03-25 17:52
Modified
2025-12-19 03:02
Severity ?
VLAI Severity ?
EPSS score ?
Summary
A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Version: 1.8.1 |
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CVE-2019-3855 (GCVE-0-2019-3855)
Vulnerability from cvelistv5
Published
2019-03-21 20:13
Modified
2025-12-17 21:40
Severity ?
VLAI Severity ?
EPSS score ?
Summary
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Version: 1.8.1 |
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CVE-2019-3859 (GCVE-0-2019-3859)
Vulnerability from cvelistv5
Published
2019-03-20 21:18
Modified
2025-12-18 11:43
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Version: 1.8.1 |
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"name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859",
"refsource": "CONFIRM",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859"
},
{
"name": "http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html"
},
{
"name": "107485",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/107485"
},
{
"name": "FEDORA-2019-f31c14682f",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/"
},
{
"name": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767",
"refsource": "CONFIRM",
"url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767"
},
{
"name": "[debian-lts-announce] 20190326 [SECURITY] [DLA 1730-1] libssh2 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20190327-0005/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20190327-0005/"
},
{
"name": "openSUSE-SU-2019:1075",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html"
},
{
"name": "[debian-lts-announce] 20190402 [SECURITY] [DLA 1730-2] libssh2 regression update",
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"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00006.html"
},
{
"name": "openSUSE-SU-2019:1109",
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"url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html"
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{
"name": "FEDORA-2019-3348cb4934",
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/"
},
{
"name": "DSA-4431",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2019/dsa-4431"
},
{
"name": "20190415 [SECURITY] [DSA 4431-1] libssh2 security update",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Apr/25"
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{
"name": "openSUSE-SU-2019:1290",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html"
},
{
"name": "openSUSE-SU-2019:1291",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.html"
},
{
"name": "[debian-lts-announce] 20190725 [SECURITY] [DLA 1730-3] libssh2 regression update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html"
},
{
"name": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
"refsource": "MISC",
"url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2019-3859",
"datePublished": "2019-03-20T21:18:13.000Z",
"dateReserved": "2019-01-03T00:00:00.000Z",
"dateUpdated": "2025-12-18T11:43:47.109Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}