AI Score
Confidence
High
EPSS
Percentile
35.1%
SSVC
Exploitation
poc
Automatable
no
Technical Impact
partial
libcurl’s URL API function
curl_url_get() offers punycode
conversions, to and from IDN. Asking to convert a name that is exactly 256
bytes, libcurl ends up reading outside of a stack based buffer when built to
use the macidn IDN backend. The conversion function then fills up the
provided buffer exactly - but does not null terminate the string.
This flaw can lead to stack contents accidently getting returned as part of
the converted string.
[
{
"cpes": [
"cpe:2.3:a:curl:libcurl:8.8.0:*:*:*:*:*:*:*"
],
"vendor": "curl",
"product": "libcurl",
"versions": [
{
"status": "affected",
"version": "8.8.0"
}
],
"defaultStatus": "unknown"
}
]