CVSS 3.1
6.3 mediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NCVE-2026-124745
Busybox: tar deferred hardlink target resolved through a deferred symlink escapes the extraction directory
Medium (6.3) in red hat.
A flaw was found in BusyBox. When extracting an archive, the tar utility improperly resolves deferred hardlink targets across symbolic links pointing outside the intended extraction directory. An attacker could provide a specially crafted archive that links to sensitive files outside the extraction tree, allowing subsequent extraction operations to overwrite arbitrary files on the system.
Severity
- CWE
- CWE-59 Improper Link Resolution Before File Access (Link Following)
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Assigned by
- redhat (CNA)
- NVD analysis
- Not in the NVD yet
- Record from
- the CVE List, synced
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Affected
- red hat:red hat enterprise linux 6
- red hat:red hat hardened images
Attack patterns (CAPEC)
- CAPEC-17 Using Malicious Files Likelihood: High · Severity: Very High
- CAPEC-35 Leverage Executable Code in Non-Executable Files Likelihood: High · Severity: Very High
- CAPEC-76 Manipulating Web Input to File System Calls Likelihood: High · Severity: Very High
- CAPEC-132 Symlink Attack Likelihood: Low · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.