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CVE Record

CVE-2018-10958: In types.cpp in Exiv2 0.26, a large size value may lead to a SIGABRT during an attempt at memory allocation...

In types.cpp in Exiv2 0.26, a large size value may lead to a SIGABRT during an attempt at memory allocation for an Exiv2::Internal::PngChunk::zlibUncompress call.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-10958 is a crash flaw in Exiv2 0.26 when handling certain PNG metadata. A specially malformed image can trigger an excessive memory allocation attempt and cause the process to abort. The business risk is service disruption in systems that automatically process untrusted images.

Executive priority

Prioritize remediation for public upload portals, content-management systems, and automated media processors. For systems that do not process untrusted images, this is lower urgency but should still be cleared through normal patching.

Technical view

The issue is in types.cpp, where a large size value can cause SIGABRT during memory allocation for Exiv2::Internal::PngChunk::zlibUncompress. The provided sources identify Exiv2 0.26 and multiple Linux distribution security updates, but do not provide CVSS, CWE, CPE, or detailed fixed-version data.

Likely exposure

Exposure is most likely where Exiv2 0.26 or distro Exiv2 packages parse PNG/image metadata from uploads, imports, archives, or automated media pipelines. The source bundle does not provide CPE coverage or a complete affected-version matrix.

Exploitation context

The sources support a denial-of-service style crash condition. The bundle does not show CISA KEV listing, active exploitation, public weaponization, or evidence of code execution. Treat internet-facing image processing as the main concern.

Researcher notes

Evidence is limited to the CVE description, Exiv2 issue reference, and distribution advisories. No CVSS, CWE, KEV status, affected CPEs, or exploit-in-the-wild evidence is present in the bundle, so impact assessment should remain availability-focused.

Mitigation direction

  • Apply the relevant Exiv2 security update from your operating system vendor.
  • Inventory applications and services that process untrusted images with Exiv2.
  • Reduce direct exposure of image parsing workers to public requests.
  • Sandbox or isolate media processing where practical.
  • Check upstream and vendor guidance for exact fixed package versions.

Validation and detection

  • Confirm whether Exiv2 0.26 or affected vendor packages are installed.
  • Map upload, import, and batch image-processing paths using Exiv2.
  • Verify vendor security updates are installed on all affected hosts.
  • Review service logs for unexplained Exiv2 or media-worker SIGABRT crashes.
  • Confirm crash isolation prevents one malformed file from disrupting core services.
Prepared
Confidence
medium
Sources
9

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
8Source 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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