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CVE Record

CVE-2017-14503: libarchive 3.3.2 suffers from an out-of-bounds read within lha_read_data_none() in archive_read_support_for...

libarchive 3.3.2 suffers from an out-of-bounds read within lha_read_data_none() in archive_read_support_format_lha.c when extracting a specially crafted lha archive, related to lha_crc16.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2017-14503 is a libarchive memory-read flaw triggered while extracting a specially crafted LHA archive. The source bundle does not provide CVSS, confirmed exploitation, or a detailed impact statement. Treat it as relevant where servers, workstations, or automated pipelines unpack untrusted archives.

Executive priority

Handle as a targeted patch-management item, not an emergency based on current evidence. Escalate priority for internet-facing or business-critical workflows that automatically unpack customer, partner, or email-sourced archives.

Technical view

libarchive 3.3.2 has an out-of-bounds read in lha_read_data_none() in archive_read_support_format_lha.c, related to lha_crc16, when extracting crafted LHA content. Multiple Linux distributions issued security updates. The provided evidence does not establish code execution, active exploitation, or complete affected-version boundaries.

Likely exposure

Exposure is most likely on systems with vulnerable libarchive packages that extract LHA archives, directly or through applications using libarchive. Highest concern is automated archive intake, email/file gateways, build systems, and user-upload processing. The bundle does not identify non-Linux downstream products or exact fixed upstream versions.

Exploitation context

The attacker-controlled input is a crafted LHA archive processed by libarchive. CISA KEV status is false in the bundle, and no cited source here confirms active exploitation. Public advisories indicate vendors considered it security-relevant enough to ship package updates.

Researcher notes

The available bundle names the vulnerable function and trigger condition but lacks CVSS, CWE, exploit confirmation, and complete version ranges. Analysis should focus on package advisory mapping, whether LHA extraction is reachable, and whether libarchive is embedded by dependent software.

Mitigation direction

  • Apply vendor libarchive security updates from your OS distribution.
  • Prioritize systems that process untrusted or user-supplied archives.
  • Check vendor guidance for exact fixed package versions.
  • Restrict automated extraction of unknown LHA archives where practical.
  • Monitor package inventories for outdated libarchive deployments.

Validation and detection

  • Identify installed libarchive versions across servers, images, and endpoints.
  • Check Debian, Ubuntu, Red Hat, or Gentoo package advisory applicability.
  • Review applications and pipelines that call libarchive indirectly.
  • Confirm vulnerable systems no longer process untrusted archives before patching.
  • Verify updated packages are deployed and services restarted if required.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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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CVE-2017-14503 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
9Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.