Security Fix(es):
In ares_set_sortlist, it calls config_sortlist(..., sortstr) to parse the input str and initialize a sortlist configuration. However, ares_set_sortlist has not any checks about the validity of the input str. It is very easy to create an arbitrary length stack overflow with the unchecked memcpy(ipbuf, str, q-str); and memcpy(ipbufpfx, str, q-str); statements in the config_sortlist call, which could potentially cause severe security impact in practical programs.(CVE-2022-4904)
{
"severity": "Medium"
}{
"aarch64": [
"c-ares-debuginfo-1.18.1-4.oe2203sp1.aarch64.rpm",
"c-ares-1.18.1-4.oe2203sp1.aarch64.rpm",
"c-ares-devel-1.18.1-4.oe2203sp1.aarch64.rpm",
"c-ares-debugsource-1.18.1-4.oe2203sp1.aarch64.rpm"
],
"noarch": [
"c-ares-help-1.18.1-4.oe2203sp1.noarch.rpm"
],
"src": [
"c-ares-1.18.1-4.oe2203sp1.src.rpm"
],
"x86_64": [
"c-ares-1.18.1-4.oe2203sp1.x86_64.rpm",
"c-ares-debuginfo-1.18.1-4.oe2203sp1.x86_64.rpm",
"c-ares-debugsource-1.18.1-4.oe2203sp1.x86_64.rpm",
"c-ares-devel-1.18.1-4.oe2203sp1.x86_64.rpm"
]
}