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Vulnerability details: VCID-4rxj-kz9j-aaac
Vulnerability ID VCID-4rxj-kz9j-aaac
Aliases CVE-2019-20788
Summary libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-787 Out-of-bounds Write
CWE-190 Integer Overflow or Wraparound
CWE-122 Heap-based Buffer Overflow
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-20788.html
rhas Important https://access.redhat.com/errata/RHSA-2020:0913
rhas Important https://access.redhat.com/errata/RHSA-2020:0920
rhas Important https://access.redhat.com/errata/RHSA-2020:0921
cvssv3 0.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20788.json
epss 0.00226 https://api.first.org/data/v1/epss?cve=CVE-2019-20788
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epss 0.00226 https://api.first.org/data/v1/epss?cve=CVE-2019-20788
epss 0.00708 https://api.first.org/data/v1/epss?cve=CVE-2019-20788
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epss 0.01855 https://api.first.org/data/v1/epss?cve=CVE-2019-20788
epss 0.03573 https://api.first.org/data/v1/epss?cve=CVE-2019-20788
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1829870
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20788
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-20788
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2019-20788
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2019-20788
generic_textual Medium https://ubuntu.com/security/notices/USN-4407-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-4407-1
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-20788.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20788.json
https://api.first.org/data/v1/epss?cve=CVE-2019-20788
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20788
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed
https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient
https://ubuntu.com/security/notices/USN-4407-1
https://usn.ubuntu.com/4407-1/
https://usn.ubuntu.com/usn/usn-4407-1
1829870 https://bugzilla.redhat.com/show_bug.cgi?id=1829870
954163 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954163
cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2019-20788 https://nvd.nist.gov/vuln/detail/CVE-2019-20788
RHSA-2020:0913 https://access.redhat.com/errata/RHSA-2020:0913
RHSA-2020:0920 https://access.redhat.com/errata/RHSA-2020:0920
RHSA-2020:0921 https://access.redhat.com/errata/RHSA-2020:0921
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20788.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-20788
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-20788
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-20788
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.60365
EPSS Score 0.00226
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.