ubuntu-cve-2025-8114
Vulnerability from osv_ubuntu
Published
2025-07-24 15:15
Modified
2026-04-22 07:53
Summary
Details
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
Severity
4.7 (Medium)
4.7 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.6.3-4.3ubuntu0.6+esm3"
},
{
"binary_name": "libssh-gcrypt-4",
"binary_version": "0.6.3-4.3ubuntu0.6+esm3"
}
],
"priority_reason": "Only a denial of service if allocation failure occurs"
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.6.3-4.3ubuntu0.6+esm3?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.3-4.3ubuntu0.6+esm3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.3-3ubuntu3",
"0.6.3-4.1",
"0.6.3-4.2",
"0.6.3-4.2ubuntu1",
"0.6.3-4.3",
"0.6.3-4.3ubuntu0.1",
"0.6.3-4.3ubuntu0.2",
"0.6.3-4.3ubuntu0.5",
"0.6.3-4.3ubuntu0.6",
"0.6.3-4.3ubuntu0.6+esm1",
"0.6.3-4.3ubuntu0.6+esm2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
},
{
"binary_name": "libssh-gcrypt-4",
"binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
}
],
"priority_reason": "Only a denial of service if allocation failure occurs"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.7.5-1",
"0.8.0~20170825.94fa1e38-1",
"0.8.0~20170825.94fa1e38-1build1",
"0.8.0~20170825.94fa1e38-1ubuntu0.1",
"0.8.0~20170825.94fa1e38-1ubuntu0.2",
"0.8.0~20170825.94fa1e38-1ubuntu0.5",
"0.8.0~20170825.94fa1e38-1ubuntu0.6",
"0.8.0~20170825.94fa1e38-1ubuntu0.7",
"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3",
"0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.9.3-2ubuntu2.5+esm2"
},
{
"binary_name": "libssh-gcrypt-4",
"binary_version": "0.9.3-2ubuntu2.5+esm2"
}
],
"priority_reason": "Only a denial of service if allocation failure occurs"
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.9.3-2ubuntu2.5+esm2?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.3-2ubuntu2.5+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.9.0-1ubuntu1",
"0.9.0-1ubuntu4",
"0.9.0-1ubuntu5",
"0.9.3-2ubuntu1",
"0.9.3-2ubuntu2",
"0.9.3-2ubuntu2.1",
"0.9.3-2ubuntu2.2",
"0.9.3-2ubuntu2.3",
"0.9.3-2ubuntu2.4",
"0.9.3-2ubuntu2.5",
"0.9.3-2ubuntu2.5+esm1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.9.6-2ubuntu0.22.04.5"
},
{
"binary_name": "libssh-gcrypt-4",
"binary_version": "0.9.6-2ubuntu0.22.04.5"
}
],
"priority_reason": "Only a denial of service if allocation failure occurs"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.9.6-2ubuntu0.22.04.5?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.6-2ubuntu0.22.04.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.9.6-1",
"0.9.6-1build1",
"0.9.6-2",
"0.9.6-2build1",
"0.9.6-2ubuntu0.22.04.1",
"0.9.6-2ubuntu0.22.04.2",
"0.9.6-2ubuntu0.22.04.3",
"0.9.6-2ubuntu0.22.04.4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.10.6-2ubuntu0.2"
},
{
"binary_name": "libssh-gcrypt-4",
"binary_version": "0.10.6-2ubuntu0.2"
}
],
"priority_reason": "Only a denial of service if allocation failure occurs"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.10.6-2ubuntu0.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.10.6-2ubuntu0.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.10.5-3ubuntu1",
"0.10.5-3ubuntu2",
"0.10.6-2",
"0.10.6-2build1",
"0.10.6-2build2",
"0.10.6-2ubuntu0.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.11.2-1ubuntu0.1"
}
],
"priority_reason": "Only a denial of service if allocation failure occurs"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.11.2-1ubuntu0.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.11.2-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.11.1-1",
"0.11.1-2",
"0.11.2-1",
"0.11.2-1build1"
]
}
],
"aliases": [],
"details": "A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.",
"id": "UBUNTU-CVE-2025-8114",
"modified": "2026-04-22T07:53:19Z",
"published": "2025-07-24T15:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-8114"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-8114"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-8114"
},
{
"type": "REPORT",
"url": "https://www.libssh.org/security/advisories/CVE-2025-8114.txt"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7849-1"
}
],
"related": [
"USN-7849-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-8114"
]
}
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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.
- 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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