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CVE Record

CVE-2018-1000035: A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protect...

A heap-based buffer overflow exists in Info-Zip UnZip version <= 6.00 in the processing of password-protected archives that allows an attacker to perform a denial of service or to possibly achieve code execution.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Info-Zip UnZip versions up to 6.00 can mishandle password-protected ZIP archives, causing a heap-based buffer overflow. A malicious archive could crash the process and may allow code execution. Business urgency depends on whether systems automatically unpack untrusted password-protected ZIP files.

Executive priority

Treat as a targeted remediation item for systems that unpack external ZIP files. It is not KEV-listed in the supplied data, but possible code execution makes exposed archive-processing workflows worth prioritizing.

Technical view

CVE-2018-1000035 is a heap-based buffer overflow in Info-Zip UnZip <= 6.00 during password-protected archive processing. The CVE description states denial of service and possible code execution. The bundle includes Debian LTS and Gentoo security advisories, but no CVSS, CWE, or detailed exploit evidence.

Likely exposure

Exposure is most likely where Info-Zip UnZip <= 6.00 is installed and used to process untrusted ZIP archives, especially automated ingestion, email attachment handling, file upload workflows, and analyst workstations.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation would require a crafted password-protected archive reaching a vulnerable unzip workflow. Do not assume internet-wide exploitation from the provided evidence.

Researcher notes

Structured affected-product data is incomplete in the bundle, but the CVE description names Info-Zip UnZip <= 6.00. Validate package backports by distribution advisory, not only upstream version strings. No exploit procedure should be inferred from the summary.

Mitigation direction

  • Inventory systems and workflows using Info-Zip UnZip.
  • Update unzip packages using vendor or distribution security guidance.
  • Prioritize systems processing untrusted or password-protected ZIP files.
  • Restrict automated extraction of untrusted archives where practical.
  • Check Debian DLA 2082-1 and Gentoo GLSA-202003-58 if applicable.

Validation and detection

  • Confirm installed unzip versions and package update status.
  • Map where ZIP extraction occurs in automated workflows.
  • Verify vendor security updates are applied on Debian or Gentoo systems.
  • Review archive-processing services for crash indicators or unusual failures.
  • Confirm controls limit untrusted password-protected archive handling.
Prepared
Confidence
medium
Sources
5

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

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ATT&CK lookup starting points

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description · low confidence lookup

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.

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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CVE-2018-1000035 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
4Source 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.