UBUNTU-CVE-2025-4878

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Source
https://ubuntu.com/security/CVE-2025-4878
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-4878.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2025-4878
Upstream
Downstream
Related
Published
2025-06-25T00:00:00Z
Modified
2025-08-20T04:58:00Z
Severity
  • 3.6 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekeyfromfile() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption.

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
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.6.3-4.3ubuntu0.6+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-4-dbgsym"
        },
        {
            "binary_version": "0.6.3-4.3ubuntu0.6+esm2",
            "binary_name": "libssh-dbg"
        },
        {
            "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-dev-dbgsym"
        },
        {
            "binary_version": "0.6.3-4.3ubuntu0.6+esm2",
            "binary_name": "libssh-doc"
        },
        {
            "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-4-dbgsym"
        },
        {
            "binary_version": "0.6.3-4.3ubuntu0.6+esm2",
            "binary_name": "libssh-gcrypt-dev"
        },
        {
            "binary_version": "0.6.3-4.3ubuntu0.6+esm2",
            "binary_name": "libssh-gcrypt-dev-dbgsym"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

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
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.8.0~20170825.94fa1e38-1ubuntu0.7+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-4-dbgsym"
        },
        {
            "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-doc"
        },
        {
            "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-4-dbgsym"
        },
        {
            "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"
}

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
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.3-2ubuntu2.5+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-4-dbgsym"
        },
        {
            "binary_version": "0.9.3-2ubuntu2.5+esm1",
            "binary_name": "libssh-dev"
        },
        {
            "binary_version": "0.9.3-2ubuntu2.5+esm1",
            "binary_name": "libssh-doc"
        },
        {
            "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-4-dbgsym"
        },
        {
            "binary_version": "0.9.3-2ubuntu2.5+esm1",
            "binary_name": "libssh-gcrypt-dev"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:22.04:LTS / libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.9.6-2ubuntu0.22.04.4?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.6-2ubuntu0.22.04.4

Affected versions

0.*

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-4"
        },
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-4-dbgsym"
        },
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-dev"
        },
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-doc"
        },
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-gcrypt-4"
        },
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-gcrypt-4-dbgsym"
        },
        {
            "binary_version": "0.9.6-2ubuntu0.22.04.4",
            "binary_name": "libssh-gcrypt-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:24.04:LTS / libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.10.6-2ubuntu0.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.10.6-2ubuntu0.1

Affected versions

0.*

0.10.5-3ubuntu1
0.10.5-3ubuntu2
0.10.6-2
0.10.6-2build1
0.10.6-2build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-4"
        },
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-4-dbgsym"
        },
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-dev"
        },
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-doc"
        },
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-gcrypt-4"
        },
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-gcrypt-4-dbgsym"
        },
        {
            "binary_version": "0.10.6-2ubuntu0.1",
            "binary_name": "libssh-gcrypt-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:25.04 / libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.11.1-1ubuntu0.1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.11.1-1ubuntu0.1

Affected versions

0.*

0.10.6-3ubuntu1
0.11.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.11.1-1ubuntu0.1",
            "binary_name": "libssh-4"
        },
        {
            "binary_version": "0.11.1-1ubuntu0.1",
            "binary_name": "libssh-4-dbgsym"
        },
        {
            "binary_version": "0.11.1-1ubuntu0.1",
            "binary_name": "libssh-dev"
        },
        {
            "binary_version": "0.11.1-1ubuntu0.1",
            "binary_name": "libssh-doc"
        }
    ],
    "availability": "No subscription required"
}