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CVE Record

CVE-2018-7726: An issue was discovered in ZZIPlib 0.13.68.

An issue was discovered in ZZIPlib 0.13.68. There is a bus error caused by the __zzip_parse_root_directory function of zip.c. Attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-7726 is a denial-of-service flaw in ZZIPlib 0.13.68. A specially crafted ZIP file can trigger a bus error while the library parses ZIP directory data, causing the affected process to crash. Business impact depends on whether user-supplied ZIP files are processed in important services or workflows.

Executive priority

Prioritize remediation for internet-facing or business-critical systems that accept ZIP files. For systems without untrusted archive processing, urgency is lower but updates should still follow normal vulnerability management cycles.

Technical view

The flaw is in ZZIPlib’s __zzip_parse_root_directory function in zip.c. Crafted ZIP input can cause a bus error, resulting in application termination. Public sources describe denial of service only; they do not establish code execution or data disclosure. Linux vendor advisories from Ubuntu, Red Hat, and Debian indicate packaged fixes or security updates were issued.

Likely exposure

Exposure is most likely where applications or services use ZZIPlib to parse ZIP files from users, partners, email, web uploads, or automated ingestion pipelines. Systems using distribution-packaged zziplib should be checked against Ubuntu, Red Hat, or Debian advisories as applicable.

Exploitation context

No CISA KEV listing or provided source confirms active exploitation. Exploitation requires convincing or causing an affected application to process a malicious ZIP file. Impact is service disruption through crash, with severity tied to the importance and restart behavior of the consuming application.

Researcher notes

The source bundle identifies ZZIPlib 0.13.68 and a crash in __zzip_parse_root_directory. The record lacks CVSS, CWE, and detailed affected-version ranges. Treat downstream vendor advisories as authoritative for packaged exposure and fixed versions.

Mitigation direction

  • Inventory systems and applications using ZZIPlib or distribution zziplib packages.
  • Apply relevant Ubuntu, Red Hat, or Debian security updates where applicable.
  • Check upstream and vendor guidance for non-distribution builds.
  • Restrict processing of untrusted ZIP files until affected components are updated.
  • Ensure critical services restart safely after parser crashes.

Validation and detection

  • Confirm installed zziplib package versions against vendor advisory fixed versions.
  • Verify applications handling ZIP files link to updated ZZIPlib libraries.
  • Review crash logs for ZIP-processing failures or bus errors.
  • Confirm upload and ingestion services reject unexpected archive sources.
  • Document exceptions where embedded ZZIPlib copies require separate remediation.
Prepared
Confidence
medium
Sources
6

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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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
5Source 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

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