[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Tue, 9 Aug 2022 14:10:35 -0300
From: Thadeu Lima de Souza Cascardo <cascardo@...onical.com>
To: oss-security@...ts.openwall.com
Subject: CVE-2022-2586 - Linux kernel nf_tables cross-table reference UAF
CVE-2022-2586 - Linux kernel nf_tables cross-table reference UAF
It was discovered that a nft object or expression could reference a nft set on
a different nft table, leading to a use-after-free once that table was deleted.
Team Orca of Sea Security (@seasecresponse) working with Trend Micro's Zero Day
Initiative discovered that this vulnerability could be exploited for Local
Privilege Escalation. This has been reported as ZDI-CAN-17470, and assigned
CVE-2022-2586.
This bug was introduced by commit 958bee14d071 ("netfilter: nf_tables: use new
transaction infrastructure to handle sets"), which is present since v3.16-rc1.
Exploiting it requires CAP_NET_ADMIN in any user or network namespace.
A PoC that will trigger KASAN is going to be posted in a week.
Fixes have been sent to netfilter-devel@...r.kernel.org and are at
https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#t.
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
