Security readout for executives and security teams
This flaw lets a malicious RAR v2 archive write files outside the intended extraction folder when processed by unrar-free/unrar-gpl. Business risk is highest where archives from customers, email, tickets, or uploads are unpacked automatically. The public bundle does not provide CVSS scoring or evidence of active exploitation. Exposure is likely on Linux or server workflows using unrar-free/unrar-gpl to extract untrusted RAR v2 archives. File ingestion services, email gateways, support portals, and automated archive processing have the most relevant risk. Treat this as a targeted hygiene issue, not an emergency based on current evidence. Prioritize systems that automatically unpack external archives, because they can turn a simple file upload or email attachment into unintended filesystem writes. Mitigation focus: Update unrar-free through Debian or your distribution security channel.; Avoid processing untrusted RAR archives with affected unrar-free/unrar-gpl builds.; Run archive extraction in a restricted workspace with least privileges..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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File access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-14120 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugs.debian.org/874059CVE reference · x_refsource_MISC
- [debian-lts-announce] 20210218 [SECURITY] [DLA 2567-1] unrar-free security updateCVE reference · mailing-list, x_refsource_MLIST
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.