CVE-2017-7516
Description
[REJECTED CVE] A vulnerability was identified in the GNU cpio package where the --no-absolute-filenames option, intended to restrict extraction to the current directory, can be bypassed using crafted symlinks. During extraction, cpio will first create the symlink and then follow it for subsequent entries, allowing a malicious archive to write files outside the intended directory (e.g., /tmp/file). An attacker could exploit this by tricking a user, into extracting such an archive, potentially leading to arbitrary file creation, privilege escalation, or data corruption.
Statement
This flaw was found to be a duplicate of CVE-2015-1197. Please see https://access.redhat.com/security/cve/CVE-2015-1197 for information about affected products and security errata.
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 | 4.4 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | None | N/A | N/A |
| User Interaction | Required | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | Low | N/A | N/A |
Vector
Red Hat: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Acknowledgements
This issue was discovered by Cedric Buissart (Red Hat).
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