LiveActive security incident?Get immediate response
CVE Record

CVE-2017-7785: A buffer overflow can occur when manipulating Accessible Rich Internet Applications (ARIA) attributes withi...

A buffer overflow can occur when manipulating Accessible Rich Internet Applications (ARIA) attributes within the DOM. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2017-7785 is a Mozilla client-side memory-safety issue. Manipulating ARIA attributes in the DOM could trigger a buffer overflow and a potentially exploitable crash. It affects old Firefox, Firefox ESR, and Thunderbird releases, so business urgency depends on whether legacy Mozilla clients remain in use.

Executive priority

Prioritize remediation if any legacy Mozilla clients remain in production. For modern managed environments, this is mainly a hygiene and legacy-asset cleanup item unless old browsers or mail clients are still deployed.

Technical view

The source describes a buffer overflow during DOM handling of Accessible Rich Internet Applications attributes. Affected versions are Firefox before 55, Firefox ESR before 52.3, and Thunderbird before 52.3. Mozilla and Linux distribution advisories published fixes, but the bundle provides no CVSS, CWE, or detailed exploitability analysis.

Likely exposure

Exposure is most likely on endpoints, servers, or VDI images still running Firefox < 55, Firefox ESR < 52.3, or Thunderbird < 52.3, including distribution-packaged variants covered by Debian, Red Hat, or Gentoo advisories.

Exploitation context

The bundle says the crash is potentially exploitable, but it does not cite active exploitation, public exploit use, or CISA KEV listing. Treat this as a serious legacy browser/mail-client risk, not as confirmed in-the-wild exploitation.

Researcher notes

Evidence is limited to advisory-level detail. The CVE bundle identifies ARIA DOM manipulation, buffer overflow, and affected version thresholds, but lacks CVSS, CWE, root-cause depth, or confirmed exploitation. Bugzilla 1356985 is the primary technical reference listed.

Mitigation direction

  • Upgrade Firefox to version 55 or later.
  • Upgrade Firefox ESR and Thunderbird to version 52.3 or later.
  • Apply relevant Debian, Red Hat, or Gentoo security updates where applicable.
  • Retire unsupported legacy Mozilla builds from managed endpoints.
  • Check current Mozilla and OS vendor guidance for remaining supported fixes.

Validation and detection

  • Inventory installed Firefox, Firefox ESR, and Thunderbird versions.
  • Confirm no assets run Firefox below 55.
  • Confirm no assets run Firefox ESR or Thunderbird below 52.3.
  • Verify applicable distro advisory packages are installed.
  • Review scanner findings for CVE-2017-7785 coverage and closure.
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2017-7785 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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 ESRunspecifiedListed
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.