Hashcash Remote Heap Buffer Overflow Vulnerability

BID:18659

CVE-2006-3251 |

Info

Hashcash Remote Heap Buffer Overflow Vulnerability

Bugtraq ID: 18659
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: No
Published: Jun 26 2006 12:00AM
Updated: Jul 21 2006 04:07PM
Credit: Discovery is credited to Andreas Seltenreich <[email protected]>.
Vulnerable: Hashcash Hashcash 1.17
Hashcash Hashcash 1.16
+ Gentoo Linux
Hashcash Hashcash 1.15
Hashcash Hashcash 1.14
Hashcash Hashcash 1.13
Hashcash Hashcash 1.12
Hashcash Hashcash 1.11
Hashcash Hashcash 1.10
Hashcash Hashcash 1.0 9
Hashcash Hashcash 1.0 8
Hashcash Hashcash 1.0 7
Hashcash Hashcash 1.0 6
Hashcash Hashcash 1.0 5
Hashcash Hashcash 1.0 4
Hashcash Hashcash 1.0 3
Hashcash Hashcash 1.0 2
Hashcash Hashcash 1.0 1
Hashcash Hashcash 1.0
Hashcash Hashcash 1.20
Hashcash Hashcash 1.19
Hashcash Hashcash 1.18
Gentoo Linux
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Not Vulnerable: Hashcash Hashcash 1.21

Discussion

Hashcash Remote Heap Buffer Overflow Vulnerability

A buffer-overflow vulnerability exists in the generic C implementation of Hashcash. This issue is due to the software's failure to properly bounds-check user-supplied input before copying it to an insufficiently sized memory buffer.

This issue may allow attackers to execute arbitrary machine code in the context of the affected application. This may facilitate the remote compromise of affected computers.

Hashcash versions prior to 1.21 are vulnerable to this issue.

Exploit / POC

Hashcash Remote Heap Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Hashcash Remote Heap Buffer Overflow Vulnerability

Solution:
The vendor has released version 1.21 of the C implementation of Hashcash to address this issue.

Please see the referenced advisories for more information on obtaining and applying fixes.


Hashcash Hashcash 1.19

Hashcash Hashcash 1.20

Hashcash Hashcash 1.18

Hashcash Hashcash 1.0 6

Hashcash Hashcash 1.0 4

Hashcash Hashcash 1.0

Hashcash Hashcash 1.0 5

Hashcash Hashcash 1.0 9

Hashcash Hashcash 1.0 2

Hashcash Hashcash 1.0 7

Hashcash Hashcash 1.0 8

Hashcash Hashcash 1.0 1

Hashcash Hashcash 1.0 3

Hashcash Hashcash 1.10

Hashcash Hashcash 1.11

Hashcash Hashcash 1.12

Hashcash Hashcash 1.13

Hashcash Hashcash 1.14

Hashcash Hashcash 1.15

Hashcash Hashcash 1.16

Hashcash Hashcash 1.17

References

Hashcash Remote Heap Buffer Overflow Vulnerability

References:

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