In FreeBSD 12.0-STABLE before r350637, 12.0-RELEASE before 12.0-RELEASE-p9, 11.3-STABLE before r350638, 11.3-RELEASE before 11.3-RELEASE-p2, and 11.2-RELEASE before 11.2-RELEASE-p13, the bsnmp library is not properly validating the submitted length from a type-length-value encoding. A remote user could cause an out-of-bounds read or trigger a crash of the software such as bsnmpd resulting in a denial of service.
[
{
"product": "FreeBSD",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "12.0-RELEASE before 12.0-RELEASE-p9"
},
{
"status": "affected",
"version": "11.3-RELEASE before 11.3-RELEASE-p2"
},
{
"status": "affected",
"version": "11.2-RELEASE before 11.2-RELEASE-p13"
}
]
}
]