USN-4447-1

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Source
https://ubuntu.com/security/notices/USN-4447-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4447-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4447-1
Upstream
Related
Published
2020-08-04T13:31:06.850244Z
Modified
2025-07-16T08:33:03.332485Z
Summary
libssh vulnerability
Details

It was discovered that libssh incorrectly handled certain requests. An attacker could possibly use this issue to cause a denial of service.

References

Affected packages

Ubuntu:16.04:LTS / libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.6.3-4.3ubuntu0.6?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.6.3-4.3ubuntu0.6

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-4-dbgsym",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-dbg",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-dev-dbgsym",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-doc",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-gcrypt-4-dbgsym",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        },
        {
            "binary_name": "libssh-gcrypt-dev-dbgsym",
            "binary_version": "0.6.3-4.3ubuntu0.6"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.7?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.8.0~20170825.94fa1e38-1ubuntu0.7

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        },
        {
            "binary_name": "libssh-4-dbgsym",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        },
        {
            "binary_name": "libssh-doc",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        },
        {
            "binary_name": "libssh-gcrypt-4-dbgsym",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.7"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / libssh

Package

Name
libssh
Purl
pkg:deb/ubuntu/libssh@0.9.3-2ubuntu2.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.3-2ubuntu2.1

Affected versions

0.*

0.9.0-1ubuntu1
0.9.0-1ubuntu4
0.9.0-1ubuntu5
0.9.3-2ubuntu1
0.9.3-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.9.3-2ubuntu2.1"
        },
        {
            "binary_name": "libssh-4-dbgsym",
            "binary_version": "0.9.3-2ubuntu2.1"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.9.3-2ubuntu2.1"
        },
        {
            "binary_name": "libssh-doc",
            "binary_version": "0.9.3-2ubuntu2.1"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.9.3-2ubuntu2.1"
        },
        {
            "binary_name": "libssh-gcrypt-4-dbgsym",
            "binary_version": "0.9.3-2ubuntu2.1"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.9.3-2ubuntu2.1"
        }
    ],
    "availability": "No subscription required"
}