by Kastro CVE-2021-22945
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP — 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 fr…
Description · from the CVE record
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*.
Affected
ProductAffectedFixed inSource
https://github.com/curl/curlcurl 7.73.0 to and including 7.78.0–CNA
SIMATIC S7-1500 CPU 1518-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIMATIC S7-1500 CPU 1518-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
SIPLUS S7-1500 CPU 1518-4 PN/DP MFPV3.1.0 – < V3.1.5V3.1.5siemens-SADP
Scores by source
CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial