Description
The gmp plugin in strongSwan before 5.6.0 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted RSA signature.
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 | 5.6.0-1 | — |
| Debian 13 | strongswan | 5.6.0-1 | — |
| Debian 12 | strongswan | 5.6.0-1 | — |
| Debian 9 | strongswan | 5.5.1-4+deb9u1 | DSA-3962-1 |
| Debian 8 | strongswan | 5.2.1-6+deb8u5 | DSA-3962-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | strongswan | 4.5.2-1.5+deb7u10 | DLA-1059-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | strongswan | 5.3.5-1ubuntu3.4 | USN-3397-1 |
| Ubuntu 14.04 LTS | strongswan | 5.1.2-0ubuntu2.7 | USN-3397-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | strongswan | 5.1.3-26.5.1 | SUSE-SU-2017:2143-1 |
| SLES 12 SP2 | strongswan | 5.1.3-26.5.1 | SUSE-SU-2017:2143-1 |
| SLES 11 SP4 | strongswan | 4.4.0-6.36.3.1 | SUSE-SU-2017:2293-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | strongswan | 5.1.3-26.5.1 | SUSE-SU-2017:2143-1 |
| SLES for SAP 12 SP2 | strongswan | 5.1.3-26.5.1 | SUSE-SU-2017:2143-1 |
| SLES for SAP 11 SP4 | strongswan | 4.4.0-6.36.3.1 | SUSE-SU-2017:2293-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | strongswan | 5.9.0-1.9 | openSUSE-SU-2024:11411-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.6 | strongswan | 5.5.3-r1 | — |
| Alpine v3.5 | strongswan | 5.5.3-r1 | — |
| Alpine v3.4 | strongswan | 5.4.0-r3 | — |
| Alpine v3.3 | strongswan | 5.3.5-r4 | — |
Advisories 8
- DSA-3962-1 strongswan - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1059-1 strongswan - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3397-1 strongswan vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:2143-1 Security update for strongswan SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11411-1 strongswan-5.9.0-1.9 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2293-1 Security update for strongswan SUSE / openSUSE Security Updates · Feb 4, 2026
- VDE-2019-009 PHOENIX CONTACT: Multiple Vulnerabilities in AXC F 2152 CERT@VDE · May 22, 2025
- ICSA-19-155-01 PHOENIX CONTACT PLCNext AXC F 2152 CISA ICS & IT advisories · Jun 4, 2019
References
- 100492 vdb-entry
- DSA-3962 vendor-advisory
- https://www.strongswan.org/blog/2017/08/14/strongswan-vulnerability-%28cve-2017-11185%29.html