7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
strongswan is vulnerable to denial of service. The vulnerability is possible due to the integer Overflow when Replacing Certificates in Cache.
git://git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-41991
cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf
github.com/strongswan/strongswan/releases/tag/5.9.4
lists.debian.org/debian-lts-announce/2021/10/msg00014.html
lists.fedoraproject.org/archives/list/[email protected]/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/
lists.fedoraproject.org/archives/list/[email protected]/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/
lists.fedoraproject.org/archives/list/[email protected]/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/
www.debian.org/security/2021/dsa-4989
www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-(cve-2021-41991).html
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P