Description
The GMP Plugin in strongSwan 4.2.0 through 4.6.3 allows remote attackers to bypass authentication via a (1) empty or (2) zeroed RSA signature, aka "RSA signature verification vulnerability."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | strongswan | 4.5.2-1.4 | — |
| Debian 13 | strongswan | 4.5.2-1.4 | — |
| Debian 12 | strongswan | 4.5.2-1.4 | — |
| Debian 6.0 | strongswan | 4.4.1-5.2 | DSA-2483-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | strongswan | 5.3.5-1.1 | openSUSE-SU-2024:10579-1 |
Advisories 2
- DSA-2483-1 strongswan - authentication bypass Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10579-1 strongswan-5.3.5-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- strongswan-rsa-security-bypass(76013) vdb-entry
- 1027110 vdb-entry
- 82587 vdb-entry
- 49336 third-party-advisory
- 49315 third-party-advisory
- 53752 vdb-entry
- http://www.strongswan.org/blog/2012/05/31/strongswan-4.6.4-released-%28cve-2012-2388%29.html
- openSUSE-SU-2012:0691 vendor-advisory
- 55051 third-party-advisory
- 49370 third-party-advisory
- DSA-2483 vendor-advisory