Security readout for executives and security teams
Plain-English summary
This vulnerability is a heap buffer overflow in OTFCC's otfccdump tool. If someone is persuaded to process a malicious font file, the tool can crash, causing denial of service. The public record does not name specific packaged products, supported versions, or a fixed release.
Executive priority
Treat this as a targeted availability risk, not a broad internet-facing emergency. Prioritize teams that run automated font conversion, validation, or ingestion pipelines using OTFCC, especially where users or partners can submit font files.
Technical view
CVE-2022-35064 is reported against OTFCC commit 617837b, with a heap buffer overflow observed in otfccdump under ASan memset. It maps to CWE-787. CVSS 3.1 is 6.5 with user interaction required and high availability impact only.
Likely exposure
Exposure appears limited to systems where OTFCC/otfccdump from the referenced vulnerable code is used to process untrusted or externally supplied font files. The CVE record lists affected vendor, product, and versions as n/a, so asset matching requires local software inventory review.
Exploitation context
The source bundle references a public GitHub PoC page and a Google Drive artifact. CISA KEV status is false, and the provided sources do not state active exploitation in the wild.
Researcher notes
Evidence is thin: the CVE provides commit-level identification, crash location, CWE, CVSS, and external references, but no named vendor/product CPEs, fixed version, or maintainer advisory. Validate exposure by code lineage and operational use rather than CPE matching.
Mitigation direction
- Identify any OTFCC or otfccdump usage in font-processing workflows.
- Avoid processing untrusted font files with affected builds.
- Run font parsing in a sandboxed, low-privilege environment.
- Check the upstream project or package maintainer for fixed builds.
- Prioritize replacement or isolation if no maintained fix is available.
Validation and detection
- Search software inventories for OTFCC and otfccdump installations.
- Confirm whether builds correspond to commit 617837b or vulnerable code.
- Review services that accept or batch-process uploaded font files.
- Check crash logs for otfccdump failures during font parsing.
- Verify compensating controls around sandboxing and file-source restrictions.
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.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-35064 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://drive.google.com/file/d/1btOL19V9nmB4BCUBSQ2fViABe3tMZ8mp/view?usp=sharingCVE reference · x_refsource_MISC
- https://github.com/Cvjark/Poc/blob/main/otfcc/CVE-2022-35064.mdCVE reference · x_refsource_MISC
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.