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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.

CVE-2023-39189 is a vulnerability identified in the Netfilter subsystem of the Linux kernel, specifically affecting Red Hat Enterprise Linux 8. The flaw exists in the nfnl_osf_add_callback function, which fails to properly validate the opt_num field controlled by user mode input. This improper validation leads to an out-of-bounds read condition. An attacker with local privileged access, specifically possessing the CAP_NET_ADMIN capability, can exploit this flaw to cause either an information disclosure or a denial-of-service condition via a kernel crash. The vulnerability does not require user interaction but does require elevated privileges, limiting the attack surface to local administrators or processes with CAP_NET_ADMIN. The out-of-bounds read can leak kernel memory contents, potentially exposing sensitive information. The flaw does not affect the integrity of the system but impacts confidentiality and availability to a limited extent. Currently, there are no known exploits in the wild, and no patches are linked in the provided data, though Red Hat is expected to release fixes. The CVSS score of 5.1 reflects a medium severity, considering the high privilege requirement and limited scope of impact. This vulnerability is significant for environments where multiple users have elevated privileges or where local access is possible to untrusted users.

Detailed information about CVE-2023-39189: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 8 affecting Red Hat Red Hat Enterprise Linux 8. Get real-time 

CVE-2023-39189: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 8 - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-39189: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 8

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