High severity · published Nov 11, 2023
CVE-2023-46849
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an…
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to 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)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
12.0 · source: NVD
FE
Fedora · Fedoraproject
39 · source: NVD
OP
Openvpn · Openvpn
2.6.0 through 2.6.6 · source: NVD
OA
Openvpn Access Server · Openvpn
2.11.0 through 2.11.3; 2.12.0; 2.12.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-46849
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-46849
Vendor Advisory
https://community.openvpn.net/openvpn/wiki/CVE-2023-46849
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/
Vendor Advisory
https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/
Third Party Advisory
https://www.debian.org/security/2023/dsa-5555
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