Home/CVE/A heap-based overflow vulnerability in Trellix Agent (Windows and Linux) version 5.7.8 and earlier, allows a remote user
CVE

CVE-2023-0977

A heap-based overflow vulnerability in Trellix Agent (Windows and Linux) version 5.7.8 and earlier, allows a remote user

A heap-based overflow vulnerability in Trellix Agent (Windows and Linux) version 5.7.8 and earlier, allows a remote user to alter the page heap in the macmnsvc process memory block resulting in the service becoming unavailable.

MEDIUM · CVSS 6.7 EPSS 0.00353
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules12 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

1
trellix agent<= 5.7.8
◈

Sigma Hunt Rules

12
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalWMI Backdoor Exchange Transport Agent
productcriticalHackTool - BabyShark Agent Default URL Pattern
producthighSuspicious Windows Update Agent Empty Cmdline
producthighSuspicious BitLocker Access Agent Update Utility Execution
producthighAtera Agent Installation
productcriticalHackTool - Windows Credential Editor (WCE) Execution
▣

Scoring & Timeline

6.7
MEDIUM · CVSS v3.1 · trellixpsirt@trellix.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Apr 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://kcm.trellix.com/corporate/index?page=content&id=SB10396Vendor Advisory
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