High severity · published Jul 24, 2023
CVE-2023-3748
A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Frrouting · Frrouting
before 8.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-3748
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-3748
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-3748
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2223668
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