Packages
- strongswan - IPsec VPN solution
Details
It was discovered that strongSwan incorrectly handled certain RSASSA-PSS
signatures. A remote attacker could use this issue to cause strongSwan to
crash, resulting in a denial of service. (CVE-2021-41990)
It was discovered that strongSwan incorrectly handled replacing
certificates in the cache. A remote attacker could use this issue to cause
strongSwan to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2021-41991)
It was discovered that strongSwan incorrectly handled certain RSASSA-PSS
signatures. A remote attacker could use this issue to cause strongSwan to
crash, resulting in a denial of service. (CVE-2021-41990)
It was discovered that strongSwan incorrectly handled replacing
certificates in the cache. A remote attacker could use this issue to cause
strongSwan to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2021-41991)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 21.10 impish | libstrongswan – 5.9.1-1ubuntu3.1 | ||
| strongswan – 5.9.1-1ubuntu3.1 | |||
| 21.04 hirsute | libstrongswan – 5.9.1-1ubuntu1.2 | ||
| strongswan – 5.9.1-1ubuntu1.2 | |||
| 20.04 focal | libstrongswan – 5.8.2-1ubuntu3.3 | ||
| strongswan – 5.8.2-1ubuntu3.3 | |||
| 18.04 bionic | libstrongswan – 5.6.2-1ubuntu2.7 | ||
| strongswan – 5.6.2-1ubuntu2.7 | |||
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