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NLOKCVE-2023-5760

HistoryNov 08, 2023 - 5:15 p.m.

CVE-2023-5760

2023-11-0817:15:07

CWE-367

NLOK

web.nvd.nist.gov

cve-2023-5760

toctou bug

avast

avg antivirus

out-of-bounds write vulnerability

local privilege escalation

CVSS3

8.2

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS

Percentile

5.1%

JSON

A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.

Affected configurations

Nvd

Node

avastavg_antivirusMatch23.8

VendorProductVersionCPE
avastavg_antivirus23.8cpe:2.3:a:avast:avg_antivirus:23.8:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
avast	avg_antivirus	23.8	cpe:2.3:a:avast:avg_antivirus:23.8:::::::*

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "Windows"
    ],
    "product": "Avast/Avg Antivirus",
    "vendor": "Avast/AVG",
    "versions": [
      {
        "status": "affected",
        "version": " 23.8"
      }
    ]
  }
]

References

support.norton.com/sp/static/external/tools/security-advisories.html

CVSS3

8.2

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS

Percentile

5.1%

JSON

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