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CVE Record

CVE-2023-37202: Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to b...

Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free. This vulnerability affects Firefox < 115, Firefox ESR < 102.13, and Thunderbird < 102.13.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2023-37202 is a Mozilla memory-safety flaw that could let Firefox or Thunderbird mishandle objects across internal JavaScript compartments, leading to a use-after-free condition. The sources name affected versions but do not provide CVSS, public exploit status, or impact details beyond the memory error.

Executive priority

Prioritize normal security patch deployment across browsers and mail clients, especially for users handling untrusted web or email content. Escalate if internal inventories show widespread outdated Mozilla versions.

Technical view

The issue involves cross-compartment wrappers around a scripted proxy storing objects from other compartments in the main compartment, resulting in use-after-free. Affected products are Firefox before 115, Firefox ESR before 102.13, and Thunderbird before 102.13.

Likely exposure

Exposure is likely on endpoints running outdated Firefox, Firefox ESR, or Thunderbird builds below the fixed versions. Debian systems using affected Mozilla packages may also be exposed until the referenced security updates are applied.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed active exploitation. Because this is a browser and mail-client use-after-free, treat unpatched internet-facing user activity as meaningful risk, but do not assume exploitation without additional evidence.

Researcher notes

Evidence is limited to Mozilla and Debian advisories plus the CVE record. No CVSS, CWE, proof-of-concept status, or detailed exploit primitives are included in the provided bundle.

Mitigation direction

  • Update Firefox to version 115 or later.
  • Update Firefox ESR to version 102.13 or later.
  • Update Thunderbird to version 102.13 or later.
  • Apply relevant Debian security updates where packages are distro-managed.
  • Check Mozilla advisories for currently supported replacement versions.

Validation and detection

  • Inventory installed Firefox, Firefox ESR, and Thunderbird versions.
  • Confirm all installations meet or exceed the fixed version thresholds.
  • Check Debian hosts for applied DSA-5450 and DSA-5451 package updates.
  • Review endpoint management data for unmanaged browser or mail-client installs.
Prepared
Confidence
high
Sources
10

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-2023-37202 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
9Source 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
MozillaFirefoxunspecifiedListed
MozillaFirefox ESRunspecifiedListed
MozillaThunderbirdunspecifiedListed
Weakness

CWE details

No CWE listed

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