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Vulnerability details: VCID-qkqm-z3zp-aaas
Vulnerability ID VCID-qkqm-z3zp-aaas
Aliases CVE-2022-23967
Summary In TightVNC 1.3.10, there is an integer signedness error and resultant heap-based buffer overflow in InitialiseRFBConnection in rfbproto.c (for the vncviewer component). There is no check on the size given to malloc, e.g., -1 is accepted. This allocates a chunk of size zero, which will give a heap pointer. However, one can send 0xffffffff bytes of data, which can have a DoS impact or lead to remote code execution.
Status Invalid
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 7.6 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2022-23967
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2022-23967
Reference id Reference type URL
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23967
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/MaherAzzouzi/CVE-2022-23967
https://www.tightvnc.com/licensing-server-x11.php
1007239 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1007239
cpe:2.3:a:tightvnc:tightvnc:1.3.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tightvnc:tightvnc:1.3.10:*:*:*:*:*:*:*
CVE-2022-23967 https://nvd.nist.gov/vuln/detail/CVE-2022-23967
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/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-2022-23967
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-2022-23967
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

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2025-04-18T16:37:50.760180+00:00 NVD CVE Status Improver Improve https://cveawg.mitre.org/api/cve/CVE-2022-23967 36.0.0