CVE-2023-34367 Auth bypass in n/a

Medium 6.5 Published Updated

Attackers can hijack TCP/IP sessions on Windows 7 and similar systems via idle scan techniques, bypassing authentication mechanisms.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-34367?

CVE-2023-34367 is a medium-severity authentication bypass vulnerability in Microsoft Windows 7, published on 14 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Windows 7 is vulnerable to a full blind TCP/IP hijacking attack. The vulnerability exists in Windows 7 (any Windows until Windows 8) and in any implementation of TCP/IP, which is vulnerable to the Idle scan attack (including many IoT devices). NOTE: The vendor considers this a low severity issue.

Weakness: CWE-287

Which versions are affected by CVE-2023-34367?

It affects 1 product.

Products include Microsoft Windows 7.

How do I fix CVE-2023-34367?

No fix has been published for CVE-2023-34367 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-34367 being exploited?

There is no known exploitation of CVE-2023-34367 in the wild and no public exploit code.

All Microsoft Windows 7 vulnerabilities

Sources

Also known as GHSA-ff2c-382x-2h25.

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