Vulnerabilities > CVE-2022-26495 - Integer Overflow or Wraparound vulnerability in multiple products

CVSS 9.8 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

network-block-device-project

debian

fedoraproject

CWE-190

critical

NVD

Published: 2022-03-06

Updated: 2024-11-21

Summary

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

Vulnerable Configurations

Part	Description	Count
Application	Network_Block_Device_Project Network Block Device Project Network Block Device 2.7.1 Network Block Device Project Network Block Device 2.7.2 Network Block Device Project Network Block Device 2.7.3 Network Block Device Project Network Block Device 2.7.6 Network Block Device Project Network Block Device 2.7.7 Network Block Device Project Network Block Device 2.7.8 Network Block Device Project Network Block Device 2.8.0 Network Block Device Project Network Block Device 2.8.1 Network Block Device Project Network Block Device 2.8.3 Network Block Device Project Network Block Device 2.8.4 Network Block Device Project Network Block Device 2.8.6 Network Block Device Project Network Block Device 2.8.7 Network Block Device Project Network Block Device 2.8.8 Network Block Device Project Network Block Device 2.9.0 Network Block Device Project Network Block Device 2.9.1 Network Block Device Project Network Block Device 2.9.2 Network Block Device Project Network Block Device 2.9.3 Network Block Device Project Network Block Device 2.9.4 Network Block Device Project Network Block Device 2.9.5 Network Block Device Project Network Block Device 2.9.6 Network Block Device Project Network Block Device 2.9.7 Network Block Device Project Network Block Device 2.9.8 Network Block Device Project Network Block Device 2.9.9 Network Block Device Project Network Block Device 2.9.10 Network Block Device Project Network Block Device 2.9.11 Network Block Device Project Network Block Device 2.9.12 Network Block Device Project Network Block Device 2.9.13 Network Block Device Project Network Block Device 2.9.14 Network Block Device Project Network Block Device 2.9.15 Network Block Device Project Network Block Device 2.9.16 Network Block Device Project Network Block Device 2.9.17 Network Block Device Project Network Block Device 2.9.18 Network Block Device Project Network Block Device 2.9.19 Network Block Device Project Network Block Device 2.9.20 Network Block Device Project Network Block Device 2.9.21 Network Block Device Project Network Block Device 2.9.22 Network Block Device Project Network Block Device 2.9.23 Network Block Device Project Network Block Device 2.9.24 Network Block Device Project Network Block Device 2.9.25 Network Block Device Project Network Block Device 3.0 Network Block Device Project Network Block Device 3.1 Network Block Device Project Network Block Device 3.1.1 Network Block Device Project Network Block Device 3.2 Network Block Device Project Network Block Device 3.2.3 Network Block Device Project Network Block Device 3.2.4 Network Block Device Project Network Block Device 3.3 Network Block Device Project Network Block Device 3.4 Network Block Device Project Network Block Device 3.5 Network Block Device Project Network Block Device 3.6 Network Block Device Project Network Block Device 3.7 Network Block Device Project Network Block Device 3.8 Network Block Device Project Network Block Device 3.9 Network Block Device Project Network Block Device 3.9.1 Network Block Device Project Network Block Device 3.10 Network Block Device Project Network Block Device 3.11 Network Block Device Project Network Block Device 3.12 Network Block Device Project Network Block Device 3.13 Network Block Device Project Network Block Device 3.14 Network Block Device Project Network Block Device 3.15 Network Block Device Project Network Block Device 3.15.1 Network Block Device Project Network Block Device 3.15.2 Network Block Device Project Network Block Device 3.15.3 Network Block Device Project Network Block Device 3.16 Network Block Device Project Network Block Device 3.16.1 Network Block Device Project Network Block Device 3.16.2 Network Block Device Project Network Block Device 3.17 Network Block Device Project Network Block Device 3.18 Network Block Device Project Network Block Device 3.19 Network Block Device Project Network Block Device 3.20 Network Block Device Project Network Block Device 3.21 Network Block Device Project Network Block Device 3.22 Network Block Device Project Network Block Device 3.23	72
OS	Debian Debian Debian Linux 9.0 Debian Debian Linux 10.0 Debian Debian Linux 11.0	3
OS	Fedoraproject Fedoraproject Fedora 34 Fedoraproject Fedora 35 Fedoraproject Fedora 36	3

Common Weakness Enumeration (CWE)

CWE-190 - Integer Overflow or Wraparound

Common Attack Pattern Enumeration and Classification (CAPEC)

Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References