FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| signalwire | freeswitch | affected |
|
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signalwire | Freeswitch |
|
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.310% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Freeswitch
Freeswitch freeswitch |
|
| CPEs | cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Freeswitch
Freeswitch freeswitch |
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Signalwire
Signalwire freeswitch |
|
| Vendors & Products |
Signalwire
Signalwire freeswitch |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, esl_recv_event() parses Content-Length with atol() and passes the result straight to malloc(len + 1) with no sign or magnitude check. A malicious or man-in-the-middle ESL peer can send a frame with a negative Content-Length to corrupt the heap of, or crash, any process linked against libesl, before the client has authenticated to that peer. This issue has been patched in version 1.11.1. | |
| Title | FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing | |
| Weaknesses | CWE-122 CWE-195 CWE-20 CWE-787 |
|
| References |
| |
| Metrics |
cvssV3_1
|