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Vulnerability Details : CVE-2022-34918

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.
Publish Date : 2022-07-04 Last Update Date : 2022-08-06
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 843

- Products Affected By CVE-2022-34918

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2022-34918

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e6bc1f6cabcd30aba0b11219d8e01b952eacbb6
https://www.debian.org/security/2022/dsa-5191
DEBIAN DSA-5191
http://www.openwall.com/lists/oss-security/2022/08/06/5
MLIST [oss-security] 20220806 Re: Linux kernel: Netfilter heap buffer overflow in nft_set_elem_init
https://www.randorisec.fr/crack-linux-firewall/
https://www.openwall.com/lists/oss-security/2022/07/02/3
http://www.openwall.com/lists/oss-security/2022/07/05/1
MLIST [oss-security] 20220705 Re: Linux kernel: Netfilter heap buffer overflow in nft_set_elem_init
https://lore.kernel.org/netfilter-devel/cd9428b6-7ffb-dd22-d949-d86f4869f452@randorisec.fr/T/#u

- Metasploit Modules Related To CVE-2022-34918

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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