Earlier this year, Linux system administrators all over the world had to deal with the Shellshock vulnerability, which could lead to malicious code being run on Linux systems. Servers running various web services were at particular risk. By now, most major distributions have been able to release patches that upgraded the vulnerable bash shell to versions not affected…
Read MoreSince the discovery of Shellshock, Trend Micro has continuously monitored the threat landscape for any attacks that may leverage these vulnerabilities. So far, we have identified an active IRC bot, exploit attempts in Brazil and China, botnet attacks, and a wide variety of malware payloads such as ELF_BASHLITE.A, ELF_BASHLET.A, and PERL_SHELLBOT.WZ among others. It is reported that…
Read MoreIt seems like the floodgates have truly opened for Shellshock-related attacks. We have reported on different attacks leveraging the Bash bug vulnerability, ranging from botnet attacks to IRC bots. We have also mentioned that we spotted Shellshock exploit attempts in Brazil. It appears that these attempts were not limited to that country alone. We saw…
Read MoreIn the immediate aftermath of the Bash vulnerability known as Shellshock, we have already seen some attacks using it to deliver DDoS malware onto Linux systems. However, given the severity of this vulnerability, it is almost certain that we will see bigger, severer attacks. What are some of the scenarios we could potentially see? Servers Web servers are currently…
Read MoreJust several hours after the news on the bash vulnerability (covered under CVE-2014-7169) broke out, it was reportedly being exploited in the wild already. This vulnerability can allow execution of arbitrary code, thus compromising the security of systems. Some of the possible scenarios that attackers can do range from changing the contents of web server and…
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