UBUNTU-CVE-2018-5382

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Source
https://ubuntu.com/security/CVE-2018-5382
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5382.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-5382
Upstream
Withdrawn
2025-07-18T16:44:28Z
Published
2018-04-16T14:29:00Z
Modified
2025-07-16T07:38:49.334698Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • 9.8 (Critical) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where people need to create the files for legacy reasons a specific keystore type "BKS-V1" was introduced in 1.49. It should be noted that the use of "BKS-V1" is discouraged by the library authors and should only be used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity check is not going to cause a security issue in itself.

References

Affected packages

Ubuntu:14.04:LTS / bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle@1.49+dfsg-2?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.49+dfsg-2

Affected versions

1.*

1.48+dfsg-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libbcmail-java",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcmail-java-doc",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcpg-java",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcpg-java-doc",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcpkix-java",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcpkix-java-doc",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcprov-java",
            "binary_version": "1.49+dfsg-2"
        },
        {
            "binary_name": "libbcprov-java-doc",
            "binary_version": "1.49+dfsg-2"
        }
    ]
}

Ubuntu:16.04:LTS / bouncycastle

Package

Name
bouncycastle
Purl
pkg:deb/ubuntu/bouncycastle@1.51-4ubuntu1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.51-4ubuntu1

Affected versions

1.*

1.49+dfsg-3ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libbcmail-java",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcmail-java-doc",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcpg-java",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcpg-java-doc",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcpkix-java",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcpkix-java-doc",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcprov-java",
            "binary_version": "1.51-4ubuntu1"
        },
        {
            "binary_name": "libbcprov-java-doc",
            "binary_version": "1.51-4ubuntu1"
        }
    ]
}