CVE-2023-4147

Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free

CVSS 7.8 HIGHEPSS 0.6%CWE-416

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.8EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

07 Aug 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Red Hat · Red Hat Enterprise Linux 6 Red Hat · Red Hat Enterprise Linux 7 Red Hat · Red Hat Enterprise Linux 8 Red Hat · Red Hat Enterprise Linux 9 Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support

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References

https://access.redhat.com/errata/RHSA-2023:5069 https://access.redhat.com/errata/RHSA-2023:5091 https://access.redhat.com/errata/RHSA-2023:5093 https://access.redhat.com/errata/RHSA-2023:7382 https://access.redhat.com/errata/RHSA-2023:7389 https://access.redhat.com/errata/RHSA-2023:7411 https://access.redhat.com/security/cve/CVE-2023-4147 https://bugzilla.redhat.com/show_bug.cgi?id=2225239 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211 https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html https://security.netapp.com/advisory/ntap-20231020-0006/https://www.debian.org/security/2023/dsa-5480