Anybody want to talk about Dirty Cow? Post: 302984395

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The Lounge What is on Your Mind? Anybody want to talk about Dirty Cow? Post 302984395 by hicksd8 on Tuesday 25th of October 2016 11:57:18 AM

10-25-2016

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Here's a news clip from the UK. (BBC Copyright acknowledged)

Users of the Linux operating system are being urged to update it to remove a "serious" bug that hackers could use to hijack systems.
Known as the Dirty Cow bug, the vulnerability has been present in many versions of Linux for almost a decade.
The warnings come as malicious hackers start exploiting it to take over vulnerable computers.
The vulnerability gets its name from the Linux sub-system, called Copy-On-Write or COW, in which it appears.
Updated versions of Linux that no longer suffer the bug are now being widely distributed. Millions of computers, including a majority of web servers, run Linux or one of its variants.

"The nature of the vulnerability lends itself to extremely reliable exploitation," Dan Rosenberg, a security researcher at Azimuth Security, told tech news site Ars Technica. He added that it was the "most serious" bug of its type ever found in Linux.
The vulnerability allows attackers to steadily increase the amount of control they can exert over a target system.
Security expert Graham Cluley said the bug was of a type that did not normally prompt action because they were less likely to be exploited. However, he said, Dirty Cow should be taken seriously because there was some evidence that it was being actively abused.
Attack code that capitalised on the weakly protected sub-system was captured by developer Phil Oester as it was used in an attempt to take over a server he runs.
Mr Oester told the V3 tech news site that the vulnerability was easy to use and was "almost certain" to be more widely used by cyberthieves.

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LEARN ABOUT DEBIAN

news

NEWS(1) 							   USER COMMANDS							   NEWS(1)

NAME

       news - display system news

SYNOPSIS

       news [-adDeflnpvxs] [[article1] [article2] ..]

DESCRIPTION

       The  news command keeps you informed of news concerning the system.  Each news item is contained in a separate file in the /var/lib/sysnews
       directory. Anyone having write permission to this directory can create a news file.

       If you run the news command without any flags, it displays every unread file in the /var/lib/sysnews directory.

       Each file is preceded by an appropriate header. To avoid reporting old news, the news command stores a currency time. The news command con-
       siders your currency time to be the date the $HOME/.news_time file was last modified. Each time you read the news, the modification time of
       this file changes to that of the reading. Only news item files posted after this time are considered unread.

OPTIONS

       -a, --all
	      Display all news, also the already read news.

       -d, --datestamp
	      Add a date stamp to each article name printed. this can only be used with the -nl flags.

       -D, --datefmt <fmt>
	      Specify a date format, see the strftime(3) man page for more details.  the default format is (%b %d %Y)

       -f, --newsdir <dir>
	      Read news from an alternate newsdir.

       -l, --oneperline
	      One article name per line.

       -n, --names
	      Only show the names of news articles.

       -p, --page
	      Pipe articles through $PAGER or more(1) if the $PAGER environment variable is not set.

       -s, --articles
	      Reports the number of news articles.

MAINTAINER OPTIONS

       -e, --expire #
	      Expire news older than # days.

       -x, --exclude a,b,c
	      A comma separated list of articles which may not be expired.  if a file named .noexpire exists  in  the  /var/lib/sysnews  direcory,
	      filenames are read from it also. names in this file may be comma separated, and/or one per line.

AUTHOR

       Charles, <int@link.xs4all.nl>

Linux								  18 January 1995							   NEWS(1)