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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.
Publish Date : 2022-01-26 Last Update Date : 2022-02-02
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CVSS Scores & Vulnerability Types
| CVSS Score |
7.5 |
| Confidentiality Impact |
Partial
(There is considerable informational disclosure.) |
| Integrity Impact |
Partial
(Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.) |
| Availability Impact |
Partial
(There is reduced performance or interruptions in resource availability.) |
| Access Complexity |
Low
(Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. ) |
| Authentication |
Not required
(Authentication is not required to exploit the vulnerability.) |
| Gained Access |
None |
| Vulnerability Type(s) |
Execute CodeOverflow |
| CWE ID |
787 |
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Products Affected By CVE-2022-23967
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Vendor |
Product |
Version |
Update |
Edition |
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No vulnerable product found. If the vulnerability is created recently it may take a few days to gather vulnerable products list and other information like cvss scores. Please check again in a few days. |
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References For CVE-2022-23967
No references found
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Metasploit Modules Related To CVE-2022-23967
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