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bug#26227: grep critical local DoS from userspace
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From: |
bloodman |
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Subject: |
bug#26227: grep critical local DoS from userspace |
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Date: |
Thu, 23 Mar 2017 20:11:58 +0100 |
Hello,
Today I searched some files and... my server goes to hell (crash).
replication:
0. log into root or user account (whatever)
1. make a huge empty file (eg. 10 GB of zeros)
(my is: -rw-r--r-- 1 root root 10485760000 Feb 28 18:14 testfile.out)
2. grep -Hi "\/tmp\/" * 2>/dev/null
3. crash (probably due to out of memory)
... damn...
greetz,
--
Tomasz 'BloodMan' Tomkowiak
- bug#26227: grep critical local DoS from userspace,
bloodman <=