CVE-2021-45960

Advisory lineage Upstream: 0 Downstream: 16
Modified
Published: 01 Jan 2022, 18:47
Last modified:05 May 2025, 16:45

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9 HIGH
v2.0 (nvd)
EPSS Score
0.32% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

01 Jan 2022, 18:47
Published
Vulnerability first disclosed
05 May 2025, 16:45
Last Modified
Vulnerability information updated

Description

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9AV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.32%• Percentile: 55%

Techniques & Countermeasures

  • CWE-682•Incorrect Calculation

    The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

Affected Systems

  • debian•debian_linux

    10.0 | 11.0

  • libexpat_project•libexpat

    < 2.4.3

  • netapp•active_iq_unified_manager

    na

  • netapp•hci_baseboard_management_controller

    h610c | h610s | h615c

  • netapp•oncommand_workflow_automation

    na

  • netapp•solidfire_\&_hci_management_node

    na

  • siemens•sinema_remote_connect_server

    < 3.1

  • tenable•nessus

    < 8.15.3 | ≥ 10.0.0, < 10.1.1

References (9)