An issue was discovered in respjsipt38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940.
{
"unresolved_ranges": [
{
"vendor_product": "debian:debian_linux",
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}{
"extracted_events": [
{
"introduced": "13.0.0"
},
{
"last_affected": "13.29.1"
},
{
"introduced": "0"
},
{
"last_affected": "13.21"
},
{
"last_affected": "13.21-cert1"
},
{
"last_affected": "13.21-cert2"
},
{
"last_affected": "13.21-cert3"
},
{
"last_affected": "13.21-cert4"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING"
],
"cpe": [
"cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.21:*:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.21:cert1:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.21:cert2:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.21:cert3:*:*:*:*:*:*",
"cpe:2.3:a:digium:certified_asterisk:13.21:cert4:*:*:*:*:*:*"
]
}