Security readout for executives and security teams
Plain-English summary
CVE-2017-1000026 affects Chef Software's mixlib-archive 0.3.0 and older. A malicious tar archive could cause files outside the intended extraction directory to be overwritten. Business risk depends on whether vulnerable software extracts archives supplied by users, CI jobs, package feeds, or other untrusted sources.
Executive priority
Prioritize if mixlib-archive is present in automation, deployment, or archive-ingestion paths handling external content. If the library is absent or only processes trusted internal archives, urgency is lower, but the vulnerable version should still be retired.
Technical view
The issue is a directory traversal flaw in mixlib-archive tar handling. Archive entries containing parent-directory path components can escape the target extraction path and overwrite arbitrary files. The source bundle does not provide CVSS, CWE, CPE data, or a specific fixed version.
Likely exposure
Exposure is likely limited to systems or applications using mixlib-archive 0.3.0 or older to extract tar archives, especially when archive content can come from untrusted or semi-trusted sources. The bundle does not identify downstream products or package ecosystems beyond Chef's mixlib-archive.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Practical impact requires a vulnerable mixlib-archive version and an archive extraction workflow that accepts malicious archive entries. Do not assume internet-wide exposure without dependency and workflow validation.
Researcher notes
The evidence is concise and lacks scoring, affected CPEs, and fixed-version detail. Focus analysis on dependency presence, archive trust boundaries, extraction permissions, and compensating filesystem controls. Treat active exploitation as unconfirmed based on the supplied bundle.
Mitigation direction
- Inventory applications and build tooling that include mixlib-archive.
- Move off mixlib-archive 0.3.0 and older where present.
- Check Chef's changelog and vendor guidance for the fixed release path.
- Avoid processing untrusted tar archives with vulnerable versions.
- Restrict archive extraction privileges and writable filesystem locations.
Validation and detection
- Review dependency manifests and lockfiles for mixlib-archive versions.
- Confirm whether affected code paths extract tar archives.
- Identify whether archives can originate from users, CI inputs, or external feeds.
- Check extraction destinations for sensitive overwrite risk.
- Review relevant systems for unexpected file changes after archive processing.
Public sources used
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
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-2017-1000026 mapping review
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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://github.com/chef/mixlib-archive/blob/master/CHANGELOG.mdCVE reference · x_refsource_CONFIRM
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.