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CVE-2022-34918
HIGH(7.8)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Risk Signal Score21/100 — NIEDRIG
- CVSS 7.8 — Hoch
EPSS-Score
5%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
7.8
Technische Schwere
Beschreibung
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.
Referenzen
- http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LS...
- http://packetstormsecurity.com/files/168543/Netfilter-nft_set_elem_init-Heap-Ove...
- http://www.openwall.com/lists/oss-security/2022/07/05/1
- http://www.openwall.com/lists/oss-security/2022/08/06/5
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e6bc1...
- https://lore.kernel.org/netfilter-devel/cd9428b6-7ffb-dd22-d949-d86f4869f452%40r...
- https://security.netapp.com/advisory/ntap-20220826-0004/
- https://www.debian.org/security/2022/dsa-5191
- https://www.openwall.com/lists/oss-security/2022/07/02/3
- https://www.randorisec.fr/crack-linux-firewall/