CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
88.7%
Ramin Farajpour Cami discovered that LibVNCServer incorrectly handled
certain malformed unix socket names. A remote attacker could exploit this
with a crafted socket name, leading to a denial of service, or possibly
execute arbitrary code. (CVE-2019-20839)
It was discovered that LibVNCServer did not properly access byte-aligned
data. A remote attacker could possibly use this issue to cause
LibVNCServer to crash, resulting in a denial of service. This issue only
affected Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. (CVE-2019-20840)
Christian Beier discovered that LibVNCServer incorrectly handled anonymous
TLS connections. A remote attacker could possibly use this issue to cause
LibVNCServer to crash, resulting in a denial of service. This issue only
affected Ubuntu 20.04 LTS. (CVE-2020-14396)
It was discovered that LibVNCServer incorrectly handled region clipping. A
remote attacker could possibly use this issue to cause LibVNCServer to
crash, resulting in a denial of service. (CVE-2020-14397)
It was discovered that LibVNCServer did not properly reset incorrectly
terminated TCP connections. A remote attacker could possibly use this
issue to cause an infinite loop, resulting in a denial of service.
(CVE-2020-14398)
It was discovered that LibVNCServer did not properly access byte-aligned
data. A remote attacker could possibly use this issue to cause
LibVNCServer to crash, resulting in a denial of service. (CVE-2020-14399,
CVE-2020-14400)
It was discovered that LibVNCServer incorrectly handled screen scaling on
the server side. A remote attacker could use this issue to cause
LibVNCServer to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2020-14401)
It was discovered that LibVNCServer incorrectly handled encodings. A
remote attacker could use this issue to cause LibVNCServer to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2020-14402, CVE-2020-14403, CVE-2020-14404)
It was discovered that LibVNCServer incorrectly handled TextChat messages.
A remote attacker could possibly use this issue to cause LibVNCServer to
crash, resulting in a denial of service. (CVE-2020-14405)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 20.04 | noarch | libvncclient1 | < 0.9.12+dfsg-9ubuntu0.2 | UNKNOWN |
Ubuntu | 20.04 | noarch | libvncclient1-dbgsym | < 0.9.12+dfsg-9ubuntu0.2 | UNKNOWN |
Ubuntu | 20.04 | noarch | libvncserver-dev | < 0.9.12+dfsg-9ubuntu0.2 | UNKNOWN |
Ubuntu | 20.04 | noarch | libvncserver1 | < 0.9.12+dfsg-9ubuntu0.2 | UNKNOWN |
Ubuntu | 20.04 | noarch | libvncserver1-dbgsym | < 0.9.12+dfsg-9ubuntu0.2 | UNKNOWN |
Ubuntu | 18.04 | noarch | libvncclient1 | < 0.9.11+dfsg-1ubuntu1.3 | UNKNOWN |
Ubuntu | 18.04 | noarch | libvncclient1-dbg | < 0.9.11+dfsg-1ubuntu1.3 | UNKNOWN |
Ubuntu | 18.04 | noarch | libvncserver-config | < 0.9.11+dfsg-1ubuntu1.3 | UNKNOWN |
Ubuntu | 18.04 | noarch | libvncserver-dev | < 0.9.11+dfsg-1ubuntu1.3 | UNKNOWN |
Ubuntu | 18.04 | noarch | libvncserver1 | < 0.9.11+dfsg-1ubuntu1.3 | UNKNOWN |
ubuntu.com/security/CVE-2019-20839
ubuntu.com/security/CVE-2019-20840
ubuntu.com/security/CVE-2020-14396
ubuntu.com/security/CVE-2020-14397
ubuntu.com/security/CVE-2020-14398
ubuntu.com/security/CVE-2020-14399
ubuntu.com/security/CVE-2020-14400
ubuntu.com/security/CVE-2020-14401
ubuntu.com/security/CVE-2020-14402
ubuntu.com/security/CVE-2020-14403
ubuntu.com/security/CVE-2020-14404
ubuntu.com/security/CVE-2020-14405
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
88.7%