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-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:20.04:LTS / libvncserver

Package

Name
libvncserver

Affected ranges

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

Ecosystem specific

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

Ubuntu:18.04:LTS / libvncserver

Package

Name
libvncserver

Affected ranges

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

Ecosystem specific

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

Ubuntu:16.04:LTS / libvncserver

Package

Name
libvncserver

Affected ranges

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

Ecosystem specific

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