CVE-2023-3748 Inifinite loop in babld message parsing may cause dos

2023-07-2415:19:20

CWE-835

redhat

github.com

cve-2023-3748

frrouting

babeld

unicast hello messages

denial of service

CVSS3

3.5

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

AI Score

6.5

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This issue may allow an attacker to send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to enter an infinite loop and cause a denial of service.