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CVE Record

CVE-2017-7778: A number of security vulnerabilities in the Graphite 2 library including out-of-bounds reads, buffer overfl...

A number of security vulnerabilities in the Graphite 2 library including out-of-bounds reads, buffer overflow reads and writes, and the use of uninitialized memory. These issues were addressed in Graphite 2 version 1.3.10. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2017-7778 is a set of memory-safety flaws in the Graphite 2 text-rendering library used by Mozilla products. The provided record says the issues were fixed in Graphite 2 version 1.3.10 and affected older Firefox, Firefox ESR, and Thunderbird releases.

Executive priority

Treat this as a legacy software remediation issue. Prioritize if affected browsers, mail clients, or Graphite 2 packages remain in use, especially on endpoints that process untrusted documents, email, or web content.

Technical view

The source bundle describes out-of-bounds reads, buffer overflow reads and writes, and uninitialized memory use in Graphite 2. Affected Mozilla products are Firefox before 54, Firefox ESR before 52.2, and Thunderbird before 52.2. No CVSS, CWE, or detailed exploit preconditions are provided.

Likely exposure

Exposure is most likely on legacy endpoints, servers, or packaged applications still running affected Mozilla versions or older Graphite 2 packages. Modern fully patched systems are less likely exposed, but bundled libraries require separate verification.

Exploitation context

The bundle does not show CISA KEV listing or cite active exploitation. Memory corruption in text-rendering components can be security-significant, but the provided evidence does not establish real-world exploitation or a weaponized path.

Researcher notes

The bundle groups multiple Graphite 2 memory issues under one CVE and references several Mozilla bugs and advisories. Public evidence supplied here is enough to identify affected versions and fixed releases, but not enough to rate severity or confirm exploitation.

Mitigation direction

  • Upgrade Graphite 2 to version 1.3.10 or later where directly managed.
  • Upgrade Firefox to 54 or later.
  • Upgrade Firefox ESR and Thunderbird to 52.2 or later.
  • Apply relevant Debian, Red Hat, or Gentoo vendor security updates.
  • Check vendor guidance for supported backports on older platforms.

Validation and detection

  • Inventory Firefox, Firefox ESR, Thunderbird, and Graphite 2 versions.
  • Confirm Linux packages include the referenced vendor security updates.
  • Check vulnerability scanner results for CVE-2017-7778 on legacy hosts.
  • Review bundled application dependencies for Graphite 2 below 1.3.10.
  • Document any unsupported systems requiring retirement or isolation.
Prepared
Confidence
medium
Sources
12

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-2017-7778 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
19Source 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.