USN-4600-2

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Source
https://ubuntu.com/security/notices/USN-4600-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4600-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-4600-2
Upstream
Related
Published
2020-10-27T13:40:49.381058Z
Modified
2025-10-13T04:35:16Z
Summary
netty vulnerabilities
Details

USN-4600-1 fixed multiple vunerabilities in Netty 3.9. This update provides the corresponding fixes for CVE-2019-20444, CVE-2019-20445 for Netty.

Also it was discovered that Netty allow for unbounded memory allocation. A remote attacker could send a large stream to the Netty server causing it to crash (denial of service). (CVE-2020-11612)

Original advisory details:

It was discovered that Netty had HTTP request smuggling vulnerabilities. A remote attacker could used it to extract sensitive information. (CVE-2019-16869, CVE-2019-20444, CVE-2019-20445, CVE-2020-7238)

References

Affected packages

Ubuntu:18.04:LTS / netty

Package

Name
netty
Purl
pkg:deb/ubuntu/netty@1:4.1.7-4ubuntu0.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.1.7-4ubuntu0.1

Affected versions

1:4.*

1:4.1.7-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnetty-java",
            "binary_version": "1:4.1.7-4ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2019-20444"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2019-20445"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-11612"
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}