A vulnerability in the eap-mschapv2 plugin related to processing Failure Request packets on the client was discovered in strongSwan that can result in a heap-based buffer overflow and potentially remote code execution. All versions since 4.2.12 are affected.
A vulnerability in charon-tkm related to processing DH public values was discovered in strongSwan that can result in a buffer overflow and potentially remote code execution. All versions since 5.3.0 are affected.
A vulnerability related to online certificate revocation checking was discovered in strongSwan that can lead to a denial-of-service attack. All versions may be affected.
A vulnerability in the EAP client implementation was discovered in strongSwan. All versions since 4.1.2 are affected.
A denial-of-service vulnerability in the in-memory certificate cache was discovered in strongSwan. All versions since 4.2.10 are affected.
A denial-of-service vulnerability in the gmp plugin was discovered in strongSwan. All versions since 5.6.1 are affected.
A potential authorization bypass vulnerability in the gmp plugin was discovered in strongSwan. All versions are affected in certain configurations.
We are happy to announce the release of strongSwan 5.6.3, which improves certificate chain validation, updates the DHCP plugin, allows forcing the local termination of IKE_SAs, supports trap policies with virtual IPs, and fixes two potential DoS vulnerabilities and several other issues.