因为上次heartbleed已经把大家吓倒了, open source的安全神话已经破灭了。 bash的这个bug非常深沉,现在不是一两个patch就能解决的问题。直到现在这么多patch 还是没解决根本问题。ssh也有类似后门。开源早就被植入大量后门,再小心也会倒霉 。这次爆出来应该是有了新的成熟后门,因此曝光老的bash bug, 在大家急忙fix的时 候悄悄放入新的后门。以前认为openBSD, freeBSD审核相对较严(毕竟最先在9x年发现 opensource后门丑闻的就是BSD dev),现在BSD也不能幸免。 "I suspect that many of the Internet of Things, or Internet of Everything, devices that have been distributed have Linux roots," says Alan Dundas, vice president and product architect for Authentify. "How will the small CPU in your thermostat prevent malware introduced via a Bash flaw from sniffing around whatever else is connected to it? It probably wasn't designed to have that capability. Therein lies the fatal error of connecting lots of simple items into a complex network without thoroughly evaluating what could go wrong." "This is potentially worse than Heartbleed," says Dundas, "because many things Linux is embedded in were never intended to be patched." Like Heartbleed, Shellshock is a vulnerability in open-source software. "I see this as a failure in the mindset of the open-source community where everyone waits for everyone else to do something or find something," says Chris Stoneff, director of professional services for Lieberman Software. " One of the interesting things happening with so much bashing of closed- source projects like Microsoft and the embrace of more open software like Linux and OSX is how much visibility Linux and OSX have gained in recent years to would-be attackers. It has shone a light on one of the biggest lies perpetrated on people: We are not vulnerable because we don't use Microsoft . Well, the proof is now here, and it's time for Linux and OSX and UNIX to take some heat." Sara Peters is Senior Editor at Dark Reading and formerly the editor-in- chief of Enterprise Efficiency. Prior that she was senior editor for the Computer Security Institute, writing and speaking about virtualization, identity management, cybersecurity law, and a myriad ...
下面是wiki给的利用这个漏洞的例子 env x='() { :;}; echo vulnerable' bash -c "echo this is a test" 大牛能不能解释一下,给个例子就是bash正常的不利用漏洞的例子?
patch vice
【在 m********5 的大作中提到】 : 因为上次heartbleed已经把大家吓倒了, open source的安全神话已经破灭了。 : bash的这个bug非常深沉,现在不是一两个patch就能解决的问题。直到现在这么多patch : 还是没解决根本问题。ssh也有类似后门。开源早就被植入大量后门,再小心也会倒霉 : 。这次爆出来应该是有了新的成熟后门,因此曝光老的bash bug, 在大家急忙fix的时 : 候悄悄放入新的后门。以前认为openBSD, freeBSD审核相对较严(毕竟最先在9x年发现 : opensource后门丑闻的就是BSD dev),现在BSD也不能幸免。 : "I suspect that many of the Internet of Things, or Internet of Everything, : devices that have been distributed have Linux roots," says Alan Dundas, vice : president and product architect for Authentify. "How will the small CPU in : your thermostat prevent malware introduced via a Bash flaw from sniffing
【在 m********5 的大作中提到】 : 因为上次heartbleed已经把大家吓倒了, open source的安全神话已经破灭了。 : bash的这个bug非常深沉,现在不是一两个patch就能解决的问题。直到现在这么多patch : 还是没解决根本问题。ssh也有类似后门。开源早就被植入大量后门,再小心也会倒霉 : 。这次爆出来应该是有了新的成熟后门,因此曝光老的bash bug, 在大家急忙fix的时 : 候悄悄放入新的后门。以前认为openBSD, freeBSD审核相对较严(毕竟最先在9x年发现 : opensource后门丑闻的就是BSD dev),现在BSD也不能幸免。 : "I suspect that many of the Internet of Things, or Internet of Everything, : devices that have been distributed have Linux roots," says Alan Dundas, vice : president and product architect for Authentify. "How will the small CPU in : your thermostat prevent malware introduced via a Bash flaw from sniffing
the script for de-supported version. I have tested, it's good. mkdir src cd src wget http://ftp.gnu.org/gnu/bash/bash-4.3.tar.gz #download all patches for i in $(seq -f "%03g" 1 27); do wget http://ftp.gnu.org/gnu/bash/bash-4.3-patches/bash43-$i; done tar zxvf bash-4.3.tar.gz cd bash-4.3 #apply all patches for i in $(seq -f "%03g" 1 27);do patch -p0 < ../bash43-$i; done #build and install ./configure --prefix=/ && make && make install cd .. cd .. rm -r src