var-202006-1843
Vulnerability from variot
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings. LibVNCServer Exists in a buffer error vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. ========================================================================== Ubuntu Security Notice USN-4573-1 October 07, 2020
vino vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in Vino.
Software Description: - vino: VNC server for GNOME
Details:
Nicolas Ruff discovered that Vino incorrectly handled large ClientCutText messages. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. (CVE-2014-6053)
It was discovered that Vino incorrectly handled certain packet lengths. A remote attacker could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code. (CVE-2018-7225)
Pavel Cheremushkin discovered that an information disclosure vulnerability existed in Vino when sending a ServerCutText message. An attacker could possibly use this issue to expose sensitive information. (CVE-2019-15681)
It was discovered that Vino incorrectly handled region clipping. A remote attacker could possibly use this issue to cause Vino to crash, resulting in a denial of service. (CVE-2020-14397)
It was discovered that Vino incorrectly handled encodings. A remote attacker could use this issue to cause Vino to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-14402, CVE-2020-14403, CVE-2020-14404)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: vino 3.22.0-5ubuntu2.1
Ubuntu 18.04 LTS: vino 3.22.0-3ubuntu1.1
Ubuntu 16.04 LTS: vino 3.8.1-0ubuntu9.3
After a standard system update you need to restart your session to make all the necessary changes.
References: https://usn.ubuntu.com/4573-1 CVE-2014-6053, CVE-2018-7225, CVE-2019-15681, CVE-2020-14397, CVE-2020-14402, CVE-2020-14403, CVE-2020-14404
Package Information: https://launchpad.net/ubuntu/+source/vino/3.22.0-5ubuntu2.1 https://launchpad.net/ubuntu/+source/vino/3.22.0-3ubuntu1.1 https://launchpad.net/ubuntu/+source/vino/3.8.1-0ubuntu9.3
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.