CVE-2021-22945

Critical

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already…

hackerone·CWE-415·Published 2021-09-23

CVSS

9.1

EPSS

0.06

KEV

Exploits

Vendor statements (4)

cve.orgen

236 chars

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.

NVDes

296 chars

Cuando se envían datos a un servidor MQTT, libcurl versiones anteriores a 7.73.0, incluyéndola y 7.78.0, podría en algunas circunstancias, mantener erróneamente un puntero a un área de memoria ya liberada y usarlo de nuevo en una llamada posterior para enviar datos y también liberarlo *de nuevo*

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
2.0	Primary	NVD	5.8	8.6	4.9	AV:N/AC:M/Au:N/C:P/I:N/A:P
3.1	Primary	cve.org	9.1	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1	Primary	NVD	9.1	3.9	5.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1	Primary	cve.org	9.1	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
3.1	Secondary	NVD	9.1	3.9	5.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H