Suspected Chinese cyber spies target unpatched SonicWall devices
Suspected Chinese cyber criminals have zeroed in on unpatched SonicWall gateways and are infecting the devices with credential-stealing malware that persists through firmware upgrades, according to Mandiant.
The campaign targeted"an extremely limited number of unpatched SMA 100 series appliances from the 2021 timeframe," the spokesperson added.– which the spokesperson described as a"maintenance release" – included additional hardening such as File Integrity Monitoring and anomalous process identification, as well as OpenSSL library updates., which targeted some of these same devices in 2021. Mandiant also assisted SonicWall to address that threat.
"SonicWall cannot conclusively attribute the initial attack vector, nor can we correlate threat activity with high confidence to ransomware attacks in 2021," the spokesperson added."The investigation, however, revealed that the unpatched devices were vulnerable to known exploited vulnerabilities, including CVE-2021-20016, CVE-2021-20028, CVE-2019-7483 and CVE-2019-7481."
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