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USN-5111-1: strongSwan vulnerabilities

19 October 2021

Several security issues were fixed in strongSwan.

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Releases

Packages

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 21.04
Ubuntu 20.04
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-5111-2: libstrongswan-extra-plugins, strongswan-plugin-eap-peap, strongswan, strongswan-plugin-systime-fix, strongswan-plugin-dhcp, strongswan-plugin-soup, strongswan-pt-tls-client, strongswan-plugin-dnskey, strongswan-plugin-openssl, strongswan-ike, strongswan-plugin-eap-tnc, strongswan-plugin-eap-radius, strongswan-nm, strongswan-plugin-xauth-pam, libstrongswan-standard-plugins, strongswan-charon, libcharon-extra-plugins, strongswan-ikev1, strongswan-plugin-gmp, strongswan-plugin-ldap, strongswan-plugin-eap-simaka-pseudonym, strongswan-plugin-led, strongswan-plugin-kernel-libipsec, strongswan-plugin-radattr, strongswan-plugin-lookip, strongswan-libcharon, strongswan-plugin-farp, strongswan-starter, strongswan-plugin-ntru, strongswan-plugin-eap-tls, strongswan-plugin-eap-ttls, strongswan-plugin-eap-sim-file, strongswan-plugin-eap-aka, strongswan-plugin-mysql, strongswan-plugin-eap-md5, strongswan-plugin-eap-simaka-reauth, strongswan-plugin-eap-dynamic, strongswan-plugin-pgp, strongswan-tnc-server, strongswan-plugin-coupling, strongswan-plugin-attr-sql, strongswan-plugin-agent, strongswan-plugin-unbound, strongswan-plugin-eap-aka-3gpp2, strongswan-plugin-curl, strongswan-plugin-pkcs11, strongswan-plugin-duplicheck, strongswan-plugin-eap-sim, strongswan-plugin-unity, strongswan-plugin-sqlite, strongswan-plugin-eap-gtc, strongswan-plugin-ipseckey, strongswan-plugin-whitelist, strongswan-tnc-ifmap, strongswan-plugin-sshkey, strongswan-tnc-base, strongswan-plugin-fips-prf, strongswan-tnc-client, strongswan-plugin-certexpire, strongswan-tnc-pdp, strongswan-plugin-eap-sim-pcsc, strongswan-plugin-xauth-eap, strongswan-plugin-xauth-generic, charon-cmd, strongswan-plugin-dnscert, strongswan-plugin-xauth-noauth, strongswan-plugin-eap-mschapv2, strongswan-plugin-gcrypt, libstrongswan, strongswan-ikev2, strongswan-plugin-af-alg, strongswan-plugin-eap-simaka-sql, strongswan-plugin-sql, strongswan-plugin-error-notify, strongswan-plugin-pubkey, strongswan-plugin-load-tester