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GitHub has been hit with the largest-ever DDoS attack, and it was only down for a few minutes:
On Wednesday, February 28, 2018 GitHub.com was unavailable from 17:21 to 17:26 UTC and intermittently unavailable from 17:26 to 17:30 UTC due to a distributed denial-of-service (DDoS) attack.
[...] Cloudflare described an amplification vector using memcached over UDP in their blog post this week, "Memcrashed - Major amplification attacks from UDP port 11211". The attack works by abusing memcached instances that are inadvertently accessible on the public internet with UDP support enabled. Spoofing of IP addresses allows memcached's responses to be targeted against another address, like ones used to serve GitHub.com, and send more data toward the target than needs to be sent by the unspoofed source. The vulnerability via misconfiguration described in the post is somewhat unique amongst that class of attacks because the amplification factor is up to 51,000, meaning that for each byte sent by the attacker, up to 51KB is sent toward the target.
[...] Between 17:21 and 17:30 UTC on February 28th we identified and mitigated a significant volumetric DDoS attack. The attack originated from over a thousand different autonomous systems (ASNs) across tens of thousands of unique endpoints. It was an amplification attack using the memcached-based approach described above that peaked at 1.35Tbps via 126.9 million packets per second.
Also at Wired and The Register.
(Score: 2) by VLM on Friday March 02 2018, @03:08PM (3 children)
There's still people left? After a zillion mergers and sales and downsizing I thought the whole site was one small shell script. ALL the old timers are long gone, correct?
I know from professional experience how "fun" it is to maintain something where the last original team member quit three years ago.
(Score: 5, Interesting) by zocalo on Friday March 02 2018, @03:49PM
UNIX? They're not even circumcised! Savages!
(Score: 1) by DECbot on Friday March 02 2018, @09:31PM (1 child)
I imagine it is done more in Linux fashion, where there is one small shell script linking to hundreds of small scripts, utilities, and perl-one-liners dynamically calling thousands of more small scripts, utilities, and perl-one-liners stored in a MySQL database that has not been updated since 2006 when the database crashed after achieving 2²⁴ − 1 comments.
cats~$ sudo chown -R us /home/base
(Score: 2) by VLM on Sunday March 04 2018, @04:24PM
I remember that although I remember it as being some autoincrementing primary key exceeded 32 bit integer. A somewhat common problem. Fixing it can be hard.