CVE-2021-41990
HIGHstrongSwan < 5.9.4 - Integer Overflow via RSASSA-PSS Certificate Signature
Title source: llmDescription
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
References (7)
Core 7
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/strongswan/strongswan/releases/tag/5.9.4
Various Sources x_refsource_confirm
https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41990%29.html
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2021/dsa-4989
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/
Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf
Scores
CVSS v3
7.5
EPSS
0.0119
EPSS Percentile
79.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-190
Status
published
Products (23)
debian/debian_linux
10.0
debian/debian_linux
11.0
fedoraproject/fedora
33
fedoraproject/fedora
34
fedoraproject/fedora
35
siemens/6gk5615-0aa00-2aa2_firmware
siemens/6gk5804-0ap00-2aa2_firmware
siemens/6gk5812-1aa00-2aa2_firmware
siemens/6gk5812-1ba00-2aa2_firmware
siemens/6gk5816-1aa00-2aa2_firmware
... and 13 more
Published
Oct 18, 2021
Tracked Since
Feb 18, 2026