Saturday, November 9, 2024

Dangerous hole in Apache Commons Text – like Log4Shell all over again

Java programmers love string interpolation features.

If you’re not a coder, you’re probably confused by the word “interpolation” here, because it’s been borrowed as programming jargon where it’s not a very good linguistic fit…

…but the idea is simple, very powerful, and sometimes spectacularly dangerous.

In other programming ecosystems it’s often known simply as string substitution, where string is shorthand for a bunch of characters, usually meant for displaying or printing out, and substitution means exactly what it says.

For example, in the Bash command shell, if you run the command:

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Steven Black (n0tst3)
Hello! I'm Steve, an independent security researcher, and analyst from Scotland, UK. I've had an avid interest in Computers, Technology and Security since my early teens. 20 years on, and, it's a whole lot more complicated... I've assisted Governments, Individuals and Organizations throughout the world. Including; US DOJ, NHS UK, GOV UK. I'll often reblog infosec-related articles that I find interesting. On the RiSec website, You'll also find a variety of write-ups, tutorials and much more!

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