CVE-2023-6932
Description
A race condition has been discovered in the Linux kernel's Internet Group Management Protocol (IGMP) implementation. This vulnerability may enable an attacker to provoke an application crash or potentially escalate privileges locally. By exploiting the race condition, an adversary could disrupt the normal operation of affected systems, leading to service disruption or, in the worst case, unauthorized access to sensitive resources.
Statement
This vulnerability poses a moderate severity risk due to its potential to trigger a use-after-free issue when processing IGMPv2 query packets under specific conditions. An attacker could exploit this flaw by continuously sending crafted IGMPv2 query packets to a vulnerable system, causing a reference count underflow in the multicast group list management. Subsequently, this could lead to a use-after-free scenario, potentially resulting in a denial-of-service condition or other adverse effects. While exploitation requires specific configurations and continuous packet transmission, the impact could be significant, warranting attention and remediation to prevent potential exploitation and system instability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7 | 7 | 7.8 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | High | High | Low |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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