CTF Writeup: Abusing select() to factor RSA

• glibc

  45 1,213 9.8 C

  Unofficial mirror of sourceware glibc repository. Updated daily. (by bminor)

  

As one safety measure, compiling with -DFORTIFY_SOURCE > 0 will enable checks on the FD_SET etc macros:

https://github.com/bminor/glibc/commit/a0f33f996f7986dbf3763...

The kernel side interface probably won't change because apparently legitimate apps have been allocating fd_sets on the heap to monitor fds > 1024 and they don't want to break those:

https://sourceware.org/bugzilla/show_bug.cgi?id=10352#c7

The underlying problem was also discussed in an article by Lennart Poettering (of systemd fame) and posted to HN back in 2021:

https://news.ycombinator.com/item?id=27215690

https://0pointer.net/blog/file-descriptor-limits.html

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

Suggest a related project