CVE intelligence and bounded remediation

CVE-2021-3326 — Gnu Glibc security vulnerability

High CVSS 7.5

The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

Severity
High
CVSS
7.5 (3.1)
Published
2021-01-27
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-617

Affected products

  • gnu / glibc
  • netapp / e-series_santricity_os_controller
  • netapp / ontap_select_deploy_administration_utility
  • oracle / communications_cloud_native_core_security_edge_protection_proxy / 1.5.0
  • fujitsu / m10-1_firmware
  • fujitsu / m10-4_firmware

Showing 6 representative product identities from 19 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.