// For flags

CVE-2023-21640

Buffer Copy Without Checking Size of Input in Linux

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Memory corruption in Linux when the file upload API is called with parameters having large buffer.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-12-07 CVE Reserved
  • 2023-07-04 CVE Published
  • 2023-07-04 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Qualcomm
Search vendor "Qualcomm"
Fastconnect 6900 Firmware
Search vendor "Qualcomm" for product "Fastconnect 6900 Firmware"
--
Affected
in Qualcomm
Search vendor "Qualcomm"
Fastconnect 6900
Search vendor "Qualcomm" for product "Fastconnect 6900"
--
Safe
Qualcomm
Search vendor "Qualcomm"
Fastconnect 7800 Firmware
Search vendor "Qualcomm" for product "Fastconnect 7800 Firmware"
--
Affected
in Qualcomm
Search vendor "Qualcomm"
Fastconnect 7800
Search vendor "Qualcomm" for product "Fastconnect 7800"
--
Safe
Qualcomm
Search vendor "Qualcomm"
Snapdragon 8 Gen 1 Firmware
Search vendor "Qualcomm" for product "Snapdragon 8 Gen 1 Firmware"
--
Affected
in Qualcomm
Search vendor "Qualcomm"
Snapdragon 8 Gen 1
Search vendor "Qualcomm" for product "Snapdragon 8 Gen 1"
--
Safe
Qualcomm
Search vendor "Qualcomm"
Wcd9380 Firmware
Search vendor "Qualcomm" for product "Wcd9380 Firmware"
--
Affected
in Qualcomm
Search vendor "Qualcomm"
Wcd9380
Search vendor "Qualcomm" for product "Wcd9380"
--
Safe
Qualcomm
Search vendor "Qualcomm"
Wsa8830 Firmware
Search vendor "Qualcomm" for product "Wsa8830 Firmware"
--
Affected
in Qualcomm
Search vendor "Qualcomm"
Wsa8830
Search vendor "Qualcomm" for product "Wsa8830"
--
Safe
Qualcomm
Search vendor "Qualcomm"
Wsa8835 Firmware
Search vendor "Qualcomm" for product "Wsa8835 Firmware"
--
Affected
in Qualcomm
Search vendor "Qualcomm"
Wsa8835
Search vendor "Qualcomm" for product "Wsa8835"
--
Safe