Security readout for executives and security teams
Plain-English summary
CVE-2022-35035 is a heap buffer overflow in OTFCC’s otfccdump component. If a vulnerable build processes a crafted font file, the main documented impact is service disruption or crash, not data theft. The public record does not identify a fixed version or affected product package.
Executive priority
Handle as a moderate availability risk. Prioritize if font processing supports customer-facing services, CI pipelines, or document ingestion. Deprioritize only after confirming OTFCC is absent or isolated from untrusted input.
Technical view
The CVE describes CWE-787 heap out-of-bounds memory access in OTFCC commit 617837b at an otfccdump offset. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges, user interaction required, and high availability impact only.
Likely exposure
Exposure is most likely where OTFCC or otfccdump processes untrusted font files, especially upload, conversion, inspection, or build pipelines. The source bundle lists affected vendor, product, versions, and CPEs as n/a, so asset matching requires local software inventory.
Exploitation context
The CVE is not listed as KEV in the supplied bundle. A public GitHub proof-of-concept reference is cited, but the bundle provides no evidence of active exploitation in the wild. Treat exploit maturity as public but operational prevalence as unclear.
Researcher notes
The public CVE data is sparse: no vendor, package version, CPE, patch, or mitigation is identified. Analysis should focus on binary provenance, reachable input paths, and whether local builds match the referenced vulnerable commit.
Mitigation direction
- Check OTFCC project guidance for a fixed commit or release.
- Avoid processing untrusted fonts with vulnerable otfccdump builds.
- Run font parsing in a sandboxed, resource-limited environment.
- Remove otfccdump from internet-reachable upload or conversion paths.
- Monitor crash reports tied to font parsing workflows.
Validation and detection
- Inventory systems and pipelines using OTFCC or otfccdump.
- Identify whether builds include or derive from commit 617837b.
- Map font upload, conversion, and inspection routes to otfccdump usage.
- Confirm untrusted files cannot reach vulnerable parsing paths.
- Review logs for recurring otfccdump crashes or abnormal exits.
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-2022-35035 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/1sRs48QDA0PSTYLUdkGyh_tvqs61yXNi7/view?usp=sharingCVE reference · x_refsource_MISC
- https://github.com/Cvjark/Poc/blob/main/otfcc/CVE-2022-35035.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.