The ASN.1 parser in strongSwan before 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, which allows remote attackers to cause a denial of service (infinite loop) via a crafted certificate.
Weakness
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Strongswan | Strongswan | * | 5.5.2 (including) |
| Strongswan | Ubuntu | devel | * |
| Strongswan | Ubuntu | esm-infra-legacy/trusty | * |
| Strongswan | Ubuntu | esm-infra/xenial | * |
| Strongswan | Ubuntu | trusty | * |
| Strongswan | Ubuntu | trusty/esm | * |
| Strongswan | Ubuntu | xenial | * |
| Strongswan | Ubuntu | yakkety | * |
| Strongswan | Ubuntu | zesty | * |
References
- http://www.debian.org/security/2017/dsa-3866
- http://www.securityfocus.com/bid/98756
- http://www.ubuntu.com/usn/USN-3301-1
- https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html
- http://www.debian.org/security/2017/dsa-3866
- http://www.securityfocus.com/bid/98756
- http://www.ubuntu.com/usn/USN-3301-1
- https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html