#VU83381 Buffer overflow in Linux kernel - CVE-2023-45871

Vulnerability identifier: #VU83381

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-45871

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the IGB driver in drivers/net/ethernet/intel/igb/igb_main.c when handling frames larger than the MTU. A remote attacker can send specially crafted traffic to the system, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.5.3, 6.5.3

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External links
http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bb5ed01cd2428cd25b1c88a3a9cba87055eb289f
http://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.3
http://security.netapp.com/advisory/ntap-20231110-0001/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.