"value":"The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected."
}
]
},
"problemtype":{
"problemtype_data":[
{
"description":[
{
"lang":"eng",
"value":"IKEv1 with default AH/ESP configuration can cause libreswan to abort and restart"
"value":"The vulnerability can only be triggered for connections with ikev2=no that do not specify an esp= option."
}
],
"work_around":[
{
"lang":"en",
"value":"As a workaround, adding an esp= line to all IKEv1 connections works around the issue. An example covering most common default configurations would be: esp=aes-sha2_512,aes-sha1,aes-sha2_256,aes-md5,3des-sha1,3des-md5. "
}
],
"solution":[
{
"lang":"en",
"value":"This issue is fixed in 4.15 and all later versions."