Security readout for executives and security teams
Plain-English summary
This CVE describes a crash risk in YottaDB through r1.32 and V7.0-000. Crafted input can trigger an incorrect size calculation for a memset call, causing a segmentation fault. The known impact is application availability loss, not data theft or code execution based on the provided sources.
Executive priority
Handle as a targeted availability risk. It is not documented as actively exploited or code-execution capable in the supplied sources, but exposed YottaDB-backed services could crash if reachable by crafted input.
Technical view
The issue is in op_fnj3 in sr_port/op_fnj3.c. A subtraction involving digit count handling can produce an extremely large memset size, leading to a segmentation fault and process crash when crafted input is processed.
Likely exposure
Exposure is most likely in systems running YottaDB through r1.32 or V7.0-000 where untrusted input can reach the affected function path. The source bundle does not identify CPEs, deployment patterns, or specific application front ends.
Exploitation context
The sources describe crafted input causing a crash. They do not cite public exploitation, exploitation in the wild, or CISA KEV listing. Treat this as a denial-of-service concern where YottaDB-backed services are reachable by untrusted users.
Researcher notes
Evidence is limited to the CVE description and YottaDB issue reference. No CVSS, CWE, CPE, patch version, or exploit-in-the-wild evidence is included in the source bundle. Avoid assuming broader impact without vendor confirmation.
Mitigation direction
- Inventory systems running YottaDB through r1.32 or V7.0-000.
- Review the YottaDB issue and vendor guidance for fixed versions or workarounds.
- Limit untrusted input paths into YottaDB-backed application logic where feasible.
- Prioritize availability monitoring for services depending on affected YottaDB versions.
Validation and detection
- Confirm installed YottaDB versions against the affected version statement.
- Map which applications accept untrusted input before invoking YottaDB logic.
- Review crash logs for segmentation faults in affected YottaDB processes.
- Check vendor issue history for fix status and regression-test guidance.
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-2021-44490 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://gitlab.com/YottaDB/DB/YDB/-/issues/828CVE 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.