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OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
Publish Date : 2019-10-09 Last Update Date : 2023-03-01
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CVSS Scores & Vulnerability Types
| CVSS Score |
4.4 |
| 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 |
Medium
(The access conditions are somewhat specialized. Some preconditions must be satistified to exploit) |
| Authentication |
Not required
(Authentication is not required to exploit the vulnerability.) |
| Gained Access |
None |
| Vulnerability Type(s) |
Execute CodeOverflowMemory corruption |
| CWE ID |
190 |
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Products Affected By CVE-2019-16905
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Number Of Affected Versions By Product
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References For CVE-2019-16905
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Vulnerability Conditions
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Vulnerability is valid if product versions listed below are used
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Vulnerability is valid if product versions listed below are used
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Vulnerability is valid if product versions listed below are used
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Vulnerability is valid if product versions listed below are used
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Metasploit Modules Related To CVE-2019-16905
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