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Category:   OS (UNIX)  >   NetBSD Vendors:   NetBSD
NetBSD Multiple Bugs in IPsec Lets Remote Users Cause the Target System to Crash
SecurityTracker Alert ID:  1040839
SecurityTracker URL:  http://securitytracker.com/id/1040839
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  May 8 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.0, 6.1, 7.0, 7.1
Description:   Several vulnerabilities were reported in NetBSD. A remote user can cause the target system to crash.

A remote user can send specially crafted IPsec Authentication Header (AH) data to trigger an input validation flaw or use-after-free memory error and cause the system to crash.

A remote user can send specially crafted data to trigger a logic error and cause the system to crash when both IPsec and forwarding is enabled.

A remote user can send specially crafted data to trigger a system panic when encapsulating security payload (ESP) is enabled.

A remote user can trigger a system panic when both IPsec and IPv6 forwarding are enabled.

A remote authenticated user can trigger a use-after-free memory error in the common Tunnel code.

A remote authenticated user can exploit a pointer initialization flaw to cause an IPv6 packet to bypass the "local address spoofing" check.

A remote authenticated user can exploit a length validation flaw to cause the system to crash.

A remote authenticated user can trigger a memory leak and use-after-free memory error and cause the system to crash when both IPv6 and forwarding are enabled.

Maxime Villard reported this vulnerability.

Impact:   A remote user can cause the target system to crash.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

https://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2018-007.txt.asc

Vendor URL:  ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2018-007.txt.asc (Links to External Site)
Cause:   Access control error, Exception handling error, Input validation error, State error

Message History:   None.


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