Security readout for executives and security teams
Plain-English summary
CVE-2017-2919 is a high-severity flaw in libxls 1.3.4. A malicious Excel XLS file can corrupt memory when parsed, potentially letting an attacker run code on the affected system. User interaction is required because a vulnerable workflow must open or process the file.
Executive priority
Treat this as a high-priority remediation item if your organization processes untrusted XLS files. Business risk is highest in document ingestion systems because successful exploitation could affect data confidentiality, integrity, and service availability.
Technical view
The vulnerability is a stack-based buffer overflow in libxls xls_getfcell. The published CVSS 3.0 score is 8.8, with network attack vector, low complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where applications, services, or batch jobs use libxls 1.3.4 to parse untrusted or externally supplied XLS files, including uploads, email attachments, or document-processing pipelines.
Exploitation context
The source bundle states a specially crafted XLS file can trigger memory corruption and remote code execution. It does not cite CISA KEV listing or other evidence of active exploitation, so active exploitation is not established here.
Researcher notes
The record identifies libxls 1.3.4 and xls_getfcell specifically. Evidence supports crafted-file-triggered memory corruption with possible RCE, but the bundle does not provide safe validation artifacts, patched version details, or confirmed in-the-wild exploitation.
Mitigation direction
- Inventory systems and dependencies for libxls 1.3.4 usage.
- Check libxls, Debian, and Gentoo guidance for fixed packages or supported upgrade paths.
- Prioritize remediation for internet-facing or user-upload XLS parsing workflows.
- Limit processing of untrusted XLS files until remediation is complete.
- Run file parsing in isolated, least-privileged environments where feasible.
Validation and detection
- Review SBOMs, package manifests, and runtime images for libxls 1.3.4.
- Map all workflows that parse XLS files from external sources.
- Confirm vendor advisory status against deployed operating system packages.
- Verify upload, email, and batch-processing paths cannot reach vulnerable parsers.
- Confirm remediation through package version review after updates.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-2919 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- DSA-4173CVE reference · vendor-advisory, x_refsource_DEBIAN
- GLSA-202003-64CVE reference · vendor-advisory, x_refsource_GENTOO
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0426CVE reference · x_refsource_MISC
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.