The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
TUGZip Archive Extraction Directory traversal
TUGZip is a powerful award-winning freeware archiving
utility for Windows® that provides support for a wide
range of compressed, encoded and disc-image files, as
well as many other very powerful features; all through
an easy to use application interface and Windows
Explorer integration.
Supports ZIP, 7-ZIP, A, ACE, ARC, ARJ, BH, BZ2, CAB,
CPIO, DEB, GCA, GZ, IMP, JAR, LHA (LZH), LIB, RAR,
RPM, SQX, TAR, TGZ, TBZ, TAZ, YZ1 and ZOO archives.
Create 7-ZIP, BH, BZ2, CAB, JAR, LHA (LZH), SQX, TAR,
TGZ, YZ1 and ZIP archives.
http://www.tugzip.com
Credit:
The information has been provided by Hamid Ebadi and
Claus Berghammer
( Hamid Network Security Team) : admin[at]hamid[.]ir
Claus Berghammer : office(at)cb-computerservice(dot)at
The original article can be found at :
http://hamid.ir/security
Vulnerable Systems:
TUGZip 3.4.0.0 , TUGZip 3.3.0.0 , TUGZip 3.1.0.2
Detail :
The vulnerability is caused due to an input validation
error when extracting files compressed with GZ (*.gz),
JAR(*.jar), RAR(*.rar), ZIP(*.zip) .
This makes it possible to have files extracted to
arbitrary locations outside the specified directory
using the "../" directory traversal sequence.
Do not extract untrusted RAR and JAR and ZIP and GZ
files.
To reduce the risk, never extract files as an
administrative user.
harmless exploit:
use HEAP [Hamid Evil Archive Pack]
you can download it from Hamid Network Security Team :
http://www.hamid.ir/tools/
want to know more ?
http://www.hamid.ir/paper
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