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CVE-2019-5597

Published: May 15, 2019

Modified: Aug 4, 2024

PUBLISHED

Description

In FreeBSD 11.3-PRERELEASE and 12.0-STABLE before r347591, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before 12.0-RELEASE-p4, a bug in the pf IPv6 fragment reassembly logic incorrectly uses the last extension header offset from the last received packet instead of the first packet allowing maliciously crafted IPv6 packets to cause a crash or potentially bypass the packet filter.

Vendor	Product	Versions
n/a	FreeBSD	affected `FreeBSD 11.2 before 11.2-RELEASE-p10 and 12.0 before 12.0-RELEASE-p4`

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-19:05.pf.asc

x_refsource_MISC

https://www.synacktiv.com/ressources/Synacktiv_OpenBSD_PacketFilter_CVE-2019-5597_ipv6_frag.pdf

x_refsource_MISC

http://packetstormsecurity.com/files/152933/FreeBSD-Security-Advisory-FreeBSD-SA-19-05.pf.html

x_refsource_MISC

vdb-entry

x_refsource_BID

https://security.netapp.com/advisory/ntap-20190611-0001/

x_refsource_CONFIRM

https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

x_refsource_MISC

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