USN-7696-1
- Source
- https://ubuntu.com/security/notices/USN-7696-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7696-1.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/USN-7696-1
- Upstream
- Related
- Published
- 2025-08-14T06:35:13.360351Z
- Modified
- 2025-10-13T04:42:15Z
- Summary
- libssh vulnerabilities
- Details
-
Ronald Crane discovered that libssh incorrectly handled certain base64 conversions. An attacker could use this issue to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-4877)
Ronald Crane discovered that libssh incorrectly handled the privatekeyfromfile() function. An attacker could use this issue to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-4878)
Ronald Crane discovered that libssh incorrectly handled certain memory operations in the sftp server. An attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2025-5318)
- References
Affected packages
Ubuntu:Pro:16.04:LTS / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/ubuntu/libssh@0.6.3-4.3ubuntu0.6+esm2?arch=source&distro=esm-infra/xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.6.3-4.3ubuntu0.6+esm2
Affected versions
0.*
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
Ecosystem specific
{
"binaries": [
{
"binary_version": "0.6.3-4.3ubuntu0.6+esm2",
"binary_name": "libssh-4"
},
{
"binary_version": "0.6.3-4.3ubuntu0.6+esm2",
"binary_name": "libssh-dev"
},
{
"binary_version": "0.6.3-4.3ubuntu0.6+esm2",
"binary_name": "libssh-gcrypt-4"
},
{
"binary_version": "0.6.3-4.3ubuntu0.6+esm2",
"binary_name": "libssh-gcrypt-dev"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
cves_map
{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-4877"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-4878"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-5318"
}
]
}
Ubuntu:Pro:18.04:LTS / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4?arch=source&distro=esm-infra/bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4
Affected versions
0.*
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
Ecosystem specific
{
"binaries": [
{
"binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4",
"binary_name": "libssh-4"
},
{
"binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4",
"binary_name": "libssh-dev"
},
{
"binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4",
"binary_name": "libssh-gcrypt-4"
},
{
"binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4",
"binary_name": "libssh-gcrypt-dev"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
cves_map
{
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-4877"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-4878"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-5318"
}
]
}
Ubuntu:Pro:20.04:LTS / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/ubuntu/libssh@0.9.3-2ubuntu2.5+esm1?arch=source&distro=esm-infra/focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.9.3-2ubuntu2.5+esm1
Affected versions
0.*
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
Ecosystem specific
{
"binaries": [
{
"binary_version": "0.9.3-2ubuntu2.5+esm1",
"binary_name": "libssh-4"
},
{
"binary_version": "0.9.3-2ubuntu2.5+esm1",
"binary_name": "libssh-dev"
},
{
"binary_version": "0.9.3-2ubuntu2.5+esm1",
"binary_name": "libssh-gcrypt-4"
},
{
"binary_version": "0.9.3-2ubuntu2.5+esm1",
"binary_name": "libssh-gcrypt-dev"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
cves_map
{
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-4877"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-4878"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2025-5318"
}
]
}