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CVE Record

CVE-2017-5459: A buffer overflow in WebGL triggerable by web content, resulting in a potentially exploitable crash.

A buffer overflow in WebGL triggerable by web content, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2017-5459 is a WebGL buffer overflow in Mozilla products. A malicious web page could trigger a crash that Mozilla described as potentially exploitable. The direct business concern is users running very old Firefox, Firefox ESR, or Thunderbird versions, especially where browsing or rendered web content is allowed.

Executive priority

Prioritize remediation where unsupported Mozilla versions remain in use. This is old, but browser memory-corruption exposure can carry meaningful user compromise risk if legacy systems still exist.

Technical view

The CVE describes a buffer overflow in WebGL reachable from web content. Affected versions are Thunderbird before 52.1, Firefox ESR before 45.9 and 52.1, and Firefox before 53. The bundle does not include CVSS, CWE, root-cause detail, or proof of exploitation.

Likely exposure

Exposure is most likely on legacy endpoints, kiosk systems, lab machines, or servers with old Mozilla packages. Modern supported Firefox and Thunderbird versions should not be assumed exposed based on this bundle.

Exploitation context

The vulnerability is triggerable by web content and may lead to an exploitable crash. The source bundle does not show CISA KEV listing or other evidence of active exploitation.

Researcher notes

Key gaps are missing CVSS, CWE, patch diff detail, and exploitation telemetry in the provided bundle. Treat the affected-version boundaries and vendor advisories as the primary validation anchors.

Mitigation direction

  • Upgrade Firefox to 53 or later, or a current supported release.
  • Upgrade Firefox ESR to 45.9, 52.1, or later supported ESR.
  • Upgrade Thunderbird to 52.1 or later, preferably a supported release.
  • Apply relevant Red Hat or Debian security updates for packaged Mozilla builds.
  • Check Mozilla and OS vendor advisories for environment-specific guidance.

Validation and detection

  • Inventory installed Firefox, Firefox ESR, and Thunderbird versions across endpoints.
  • Flag any Firefox version below 53 as exposed.
  • Flag Firefox ESR below 45.9 or 52.1 as exposed per branch.
  • Flag Thunderbird below 52.1 as exposed.
  • Confirm Linux package versions include the referenced vendor security fixes.
Prepared
Confidence
medium
Sources
11

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-2017-5459 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
10Source 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
MozillaThunderbirdunspecifiedListed
MozillaFirefox ESRunspecified, unspecifiedListed
MozillaFirefoxunspecifiedListed
Weakness

CWE details

No CWE listed

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