CVE-2022-0530
Description
A flaw was found in Unzip. The vulnerability occurs during the conversion of a UTF-8 string to a local string that leads to a segmentation fault. This flaw allows an attacker to input a specially crafted zip file, leading to a crash.
Statement
This issue is classified with a low severity primarily because untrusted zip files are not typically extracted with the root user, limiting the impact of this issue. Additionally, this segmentation fault is caused by a NULL pointer dereference and is only triggered during the parsing of a specially crafted file, requiring an attacker to convince a user to process this file with unzip. Furthermore, unzip does not handle privileged operations, meaning that exploitation is unlikely to lead to system compromise or escalation of privileges. Also, the impact is limited to the application itself, without affecting the broader system or network security.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | 5.5 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | Required | Required | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Red Hat CVSS v3 Score Explanation
C:N because this vulnerability does not access or control any user data as well as system data. I:N because this vulnerability does not modify or control any user data as well as system data. This vulnerability only affects the Availability only during conversion of an utf-8 string to a local string.
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