CVE-2023-3748
Published: 19 July 2023
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
frr Launchpad, Ubuntu, Debian |
trusty |
Ignored
(end of standard support)
|
| xenial |
Ignored
(end of standard support)
|
|
| bionic |
Ignored
(end of standard support)
|
|
| focal |
Not vulnerable
(code not present)
|
|
| jammy |
Not vulnerable
(code not present)
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| lunar |
Released
(8.4.2-1ubuntu1.2)
|
|
| upstream |
Needs triage
|
|
|
Patches: upstream: https://github.com/FRRouting/frr/commit/ae1e0e1fed77716bc06f181ad68c4433fb5523d0 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |