USN-4407-1

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Source
https://ubuntu.com/security/notices/USN-4407-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4407-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4407-1
Related
Published
2020-07-01T23:44:41.765698Z
Modified
2020-07-01T23:44:41.765698Z
Summary
libvncserver vulnerabilities
Details

It was discovered that LibVNCServer incorrectly handled decompressing data. An attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service. (CVE-2019-15680)

It was discovered that an information disclosure vulnerability existed in LibVNCServer when sending a ServerCutText message. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. (CVE-2019-15681)

It was discovered that LibVNCServer incorrectly handled cursor shape updates. If a user were tricked in to connecting to a malicious server, an attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. (CVE-2019-15690, CVE-2019-20788)

It was discovered that LibVNCServer incorrectly handled decoding WebSocket frames. An attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. (CVE-2017-18922)

References

Affected packages

Ubuntu:16.04:LTS / libvncserver

Package

Name
libvncserver
Purl
pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.4?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.10+dfsg-3ubuntu0.16.04.4

Affected versions

0.*

0.9.10+dfsg-3
0.9.10+dfsg-3build1
0.9.10+dfsg-3ubuntu0.16.04.1
0.9.10+dfsg-3ubuntu0.16.04.2
0.9.10+dfsg-3ubuntu0.16.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncclient1-dbg",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncclient1-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver-config",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver-config-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver-dev",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver-dev-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver1-dbg",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        },
        {
            "binary_name": "libvncserver1-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / libvncserver

Package

Name
libvncserver
Purl
pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.11+dfsg-1ubuntu1.2

Affected versions

0.*

0.9.11+dfsg-1
0.9.11+dfsg-1ubuntu1
0.9.11+dfsg-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.11+dfsg-1ubuntu1.2"
        },
        {
            "binary_name": "libvncclient1-dbg",
            "binary_version": "0.9.11+dfsg-1ubuntu1.2"
        },
        {
            "binary_name": "libvncserver-config",
            "binary_version": "0.9.11+dfsg-1ubuntu1.2"
        },
        {
            "binary_name": "libvncserver-dev",
            "binary_version": "0.9.11+dfsg-1ubuntu1.2"
        },
        {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.11+dfsg-1ubuntu1.2"
        },
        {
            "binary_name": "libvncserver1-dbg",
            "binary_version": "0.9.11+dfsg-1ubuntu1.2"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / libvncserver

Package

Name
libvncserver
Purl
pkg:deb/ubuntu/libvncserver@0.9.12+dfsg-9ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.12+dfsg-9ubuntu0.1

Affected versions

0.*

0.9.11+dfsg-1.3
0.9.12+dfsg-3ubuntu3
0.9.12+dfsg-6
0.9.12+dfsg-7
0.9.12+dfsg-8
0.9.12+dfsg-9

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.12+dfsg-9ubuntu0.1"
        },
        {
            "binary_name": "libvncclient1-dbgsym",
            "binary_version": "0.9.12+dfsg-9ubuntu0.1"
        },
        {
            "binary_name": "libvncserver-dev",
            "binary_version": "0.9.12+dfsg-9ubuntu0.1"
        },
        {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.12+dfsg-9ubuntu0.1"
        },
        {
            "binary_name": "libvncserver1-dbgsym",
            "binary_version": "0.9.12+dfsg-9ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}