UBUNTU-CVE-2018-0732

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Source
https://ubuntu.com/security/CVE-2018-0732
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-0732.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-0732
Upstream
Downstream
Related
Published
2018-06-12T00:00:00Z
Modified
2025-09-08T16:44:37Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).

References

Affected packages

Ubuntu:14.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.26?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.1f-1ubuntu2.26

Affected versions

1.*

1.0.1e-3ubuntu1
1.0.1e-4ubuntu1
1.0.1e-4ubuntu2
1.0.1e-4ubuntu3
1.0.1e-4ubuntu4
1.0.1f-1ubuntu1
1.0.1f-1ubuntu2
1.0.1f-1ubuntu2.1
1.0.1f-1ubuntu2.2
1.0.1f-1ubuntu2.3
1.0.1f-1ubuntu2.4
1.0.1f-1ubuntu2.5
1.0.1f-1ubuntu2.7
1.0.1f-1ubuntu2.8
1.0.1f-1ubuntu2.11
1.0.1f-1ubuntu2.12
1.0.1f-1ubuntu2.15
1.0.1f-1ubuntu2.16
1.0.1f-1ubuntu2.17
1.0.1f-1ubuntu2.18
1.0.1f-1ubuntu2.19
1.0.1f-1ubuntu2.20
1.0.1f-1ubuntu2.21
1.0.1f-1ubuntu2.22
1.0.1f-1ubuntu2.23
1.0.1f-1ubuntu2.24
1.0.1f-1ubuntu2.25

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssl-dev",
            "binary_version": "1.0.1f-1ubuntu2.26"
        },
        {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.1f-1ubuntu2.26"
        },
        {
            "binary_name": "openssl",
            "binary_version": "1.0.1f-1ubuntu2.26"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.13?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.2g-1ubuntu4.13

Affected versions

1.*

1.0.2d-0ubuntu1
1.0.2d-0ubuntu2
1.0.2e-1ubuntu1
1.0.2f-2ubuntu1
1.0.2g-1ubuntu2
1.0.2g-1ubuntu3
1.0.2g-1ubuntu4
1.0.2g-1ubuntu4.1
1.0.2g-1ubuntu4.2
1.0.2g-1ubuntu4.4
1.0.2g-1ubuntu4.5
1.0.2g-1ubuntu4.6
1.0.2g-1ubuntu4.8
1.0.2g-1ubuntu4.9
1.0.2g-1ubuntu4.10
1.0.2g-1ubuntu4.11
1.0.2g-1ubuntu4.12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssl-dev",
            "binary_version": "1.0.2g-1ubuntu4.13"
        },
        {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.2g-1ubuntu4.13"
        },
        {
            "binary_name": "openssl",
            "binary_version": "1.0.2g-1ubuntu4.13"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@1.1.0g-2ubuntu4.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.0g-2ubuntu4.1

Affected versions

1.*

1.0.2g-1ubuntu13
1.0.2g-1ubuntu14
1.0.2n-1ubuntu1
1.1.0g-2ubuntu1
1.1.0g-2ubuntu2
1.1.0g-2ubuntu3
1.1.0g-2ubuntu4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssl-dev",
            "binary_version": "1.1.0g-2ubuntu4.1"
        },
        {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.0g-2ubuntu4.1"
        },
        {
            "binary_name": "openssl",
            "binary_version": "1.1.0g-2ubuntu4.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / openssl1.0

Package

Name
openssl1.0
Purl
pkg:deb/ubuntu/openssl1.0@1.0.2n-1ubuntu5.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.2n-1ubuntu5.1

Affected versions

1.*

1.0.2n-1ubuntu2
1.0.2n-1ubuntu3
1.0.2n-1ubuntu4
1.0.2n-1ubuntu5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libssl1.0-dev",
            "binary_version": "1.0.2n-1ubuntu5.1"
        },
        {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.2n-1ubuntu5.1"
        },
        {
            "binary_name": "openssl1.0",
            "binary_version": "1.0.2n-1ubuntu5.1"
        }
    ],
    "availability": "No subscription required"
}