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CVE Record

CVE-2018-7729: An issue was discovered in Exempi through 2.4.4.

An issue was discovered in Exempi through 2.4.4. There is a stack-based buffer over-read in the PostScript_MetaHandler::ParsePSFile() function in XMPFiles/source/FileHandlers/PostScript_Handler.cpp.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-7729 is a memory-reading bug in Exempi, a library for handling XMP metadata. Versions through 2.4.4 can over-read stack memory while parsing PostScript files. Business risk is most relevant where servers, desktops, or applications process untrusted PostScript or metadata files.

Executive priority

Treat as a targeted patching item, not an emergency based on current evidence. Prioritize exposed file-processing systems and endpoints that handle externally supplied PostScript or metadata-rich files.

Technical view

The flaw is a stack-based buffer over-read in PostScript_MetaHandler::ParsePSFile() in XMPFiles/source/FileHandlers/PostScript_Handler.cpp. The CVE record identifies Exempi through 2.4.4 as affected. Public references include an upstream commit, a freedesktop bug, and Ubuntu/Fedora advisories, but the bundle provides no CVSS score.

Likely exposure

Exposure is likely on systems running Exempi through 2.4.4, especially where applications parse PostScript files or extract XMP metadata from untrusted content. Linux distribution packages may be affected if not updated according to vendor advisories.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. A plausible attack path would involve a crafted PostScript file being parsed by vulnerable Exempi. The exact real-world impact is not fully characterized in the provided data.

Researcher notes

The key evidence is the CVE description, upstream commit reference, freedesktop bug, and distro advisories. Severity, CVSS, CWE, and exploit status are incomplete in the supplied data, so impact assessment should be validated against vendor package notes.

Mitigation direction

  • Identify Exempi installations and versions across servers, desktops, and container images.
  • Apply vendor-provided Exempi updates from your Linux distribution or upstream guidance.
  • Prioritize systems processing untrusted PostScript or metadata files.
  • If updates are unavailable, check vendor guidance for supported workarounds.

Validation and detection

  • Verify installed Exempi version is not through 2.4.4, or is vendor-patched.
  • Review package changelogs for references to CVE-2018-7729 or the upstream fix.
  • Confirm applications using libexempi are restarted after updates.
  • Test representative file-processing workflows after patching.
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

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.

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CVE-2018-7729 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
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

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