cURL / libcURL TFTP URL Parser Buffer Overflow Vulnerability

BID:17154

Info

cURL / libcURL TFTP URL Parser Buffer Overflow Vulnerability

Bugtraq ID: 17154
Class: Boundary Condition Error
CVE: CVE-2006-1061
Remote: Yes
Local: Yes
Published: Mar 20 2006 12:00AM
Updated: Jul 28 2006 11:32PM
Credit: Ulf Harnhammar Project is credited with the discovery of this vulnerability.
Vulnerable: Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Redhat Fedora Core5
OpenPKG OpenPKG 2.5
OpenPKG OpenPKG 2.0
OpenPKG OpenPKG Current
Gentoo Linux
Daniel Stenberg curl 7.15.2
Daniel Stenberg curl 7.15.1
Daniel Stenberg curl 7.15
Not Vulnerable: Daniel Stenberg curl 7.15.3
Daniel Stenberg curl 7.14.1
Daniel Stenberg curl 7.14
Daniel Stenberg curl 7.13.2
Daniel Stenberg curl 7.13.1
Daniel Stenberg curl 7.13
Daniel Stenberg curl 7.13
Daniel Stenberg curl 7.12.3
Daniel Stenberg curl 7.12.2
Daniel Stenberg curl 7.12.1
+ Redhat Desktop 4.0
+ Redhat Enterprise Linux AS 4
 + Redhat Enterprise Linux ES 4
 + Redhat Enterprise Linux WS 4
 Daniel Stenberg curl 7.12
+ S.u.S.E. Linux Personal 9.2 x86_64
 + S.u.S.E. Linux Personal 9.2
+ Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 Daniel Stenberg curl 7.11.2
Daniel Stenberg curl 7.11.1
Daniel Stenberg curl 7.11
+ S.u.S.E. Linux Personal 9.1 x86_64
 + S.u.S.E. Linux Personal 9.1
Daniel Stenberg curl 7.10.8
Daniel Stenberg curl 7.10.7
Daniel Stenberg curl 7.10.6
+ Redhat Desktop 3.0
+ Redhat Enterprise Linux AS 3
 + Redhat Enterprise Linux ES 3
 + Redhat Enterprise Linux WS 3
 Daniel Stenberg curl 7.10.5
Daniel Stenberg curl 7.10.4
Daniel Stenberg curl 7.10.3
Daniel Stenberg curl 7.10.2
Daniel Stenberg curl 7.10.1
Daniel Stenberg curl 7.10

Discussion

cURL / libcURL TFTP URL Parser Buffer Overflow Vulnerability

cURL and libcURL are prone to a buffer-overflow vulnerability. This issue is due to a failure in the library to perform proper bounds checks on user-supplied data before using it in a finite-sized buffer.

The issue occurs when the URL parser handles an excessively long URL string with a TFTP protocol prefix 'tftp://'.


An attacker can exploit this issue to crash the affected library, effectively denying service. Arbitrary code execution may also be possible, which may facilitate a compromise of the underlying system.

Exploit / POC

cURL / libcURL TFTP URL Parser 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

cURL / libcURL TFTP URL Parser Buffer Overflow Vulnerability

Solution:
Please see the referenced advisories for more information.


Daniel Stenberg curl 7.15

Daniel Stenberg curl 7.15.1

Daniel Stenberg curl 7.15.2

References

cURL / libcURL TFTP URL Parser Buffer Overflow Vulnerability

References:
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