CVE-2023-41056
Description
A flaw was found in Redis. When processing a certain sequence of payloads, Redis may incorrectly handle the resizing of memory buffers, leading to a heap-based buffer overflow, potentially resulting in a denial of service or remote code execution.
Statement
The redis package, as shipped with Red Hat Enterprise Linux 8, 9, and RHSCL is not affected by this vulnerability because the vulnerable code was introduced in a newer version of redis. However, the redis:7 module as shipped with Red Hat Enterprise Linux 9.3 is affected.
Mitigation
Mitigation for this issue is either not available or the currently available options do not 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 | 8.1 | 8.1 | 8.1 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | High | High | High |
| Privileges Required | None | None | None |
| 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:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat CVSS v3 Score Explanation
The attacker needs to identify a code path that can lead to exploitation of the underlying vulnerability, which we did not manage to confirm.
The attack must be sufficiently complex to control the amount of data Redis can read from a TCP socket in every event loop iteration.
The attack also needs to involve a carefully crafted exploit payload that can leverage heap overflow and achieve RCE, which adds more complexity.
To reflect these conditions, the Attack Complexity metric was set to High.
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