Security readout for executives and security teams
Plain-English summary
CVE-2017-7845 is a Mozilla graphics-library buffer overflow affecting WebGL handling on Windows. A malicious or malformed WebGL page could trigger a potentially exploitable crash in old Firefox, Firefox ESR, or Thunderbird versions. Non-Windows systems are stated as unaffected.
Executive priority
Prioritize remediation where old Mozilla clients remain on Windows. This is mainly a legacy-software risk, but it involves memory corruption in user-facing applications that can handle untrusted content.
Technical view
The issue occurs in ANGLE when drawing and validating elements through Direct3D 9. An incorrect value is passed during checks, causing a buffer overflow and potentially exploitable crash. Affected versions are Thunderbird before 52.5.2, Firefox ESR before 52.5.2, and Firefox before 57.0.2.
Likely exposure
Exposure is most likely on legacy Windows endpoints still running affected Mozilla clients. Current supported Firefox and Thunderbird deployments should not be exposed if they are beyond the fixed versions.
Exploitation context
The source bundle does not show KEV listing or confirmed active exploitation. The risk is still material because browser and mail clients process attacker-controlled content, including WebGL content in affected Firefox paths.
Researcher notes
Evidence is limited to advisory-level details. No CVSS, CWE, proof-of-concept, or exploit-in-the-wild confirmation is included in the supplied bundle. Treat exploitability as plausible but not proven from these sources alone.
Mitigation direction
- Inventory Windows systems running Firefox, Firefox ESR, or Thunderbird.
- Upgrade Firefox to 57.0.2 or later, preferably a supported current release.
- Upgrade Firefox ESR and Thunderbird to 52.5.2 or later.
- Remove or isolate obsolete Mozilla clients that cannot be upgraded.
- Check Mozilla advisories for any environment-specific guidance.
Validation and detection
- Confirm whether the endpoint operating system is Windows.
- Record installed Firefox, Firefox ESR, and Thunderbird versions.
- Flag Firefox below 57.0.2 as affected.
- Flag Firefox ESR or Thunderbird below 52.5.2 as affected.
- Verify remediation by rechecking installed versions after update.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2017-7845 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mozilla.org/security/advisories/mfsa2017-28/CVE reference · x_refsource_CONFIRM
- https://www.mozilla.org/security/advisories/mfsa2017-29/CVE reference · x_refsource_CONFIRM
- https://www.mozilla.org/security/advisories/mfsa2017-30/CVE reference · x_refsource_CONFIRM
- https://bugzilla.mozilla.org/show_bug.cgi?id=1402372CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.