Cisco IOS System Timers Heap Buffer Overflow Exploitation

Bugtraq ID:	15275
Class:	Boundary Condition Error
CVE:	CVE-2005-3481
Remote:	Yes
Local:	No
Published:	Nov 02 2005 12:00AM
Updated:	Jun 28 2007 10:58PM
Credit:	This vulnerability was disclosed in the referenced vendor advisory.
Vulnerable:	Cisco IOS 11.3.1 ED Cisco IOS 11.3.1 Cisco IOS 11.2.10 BC Cisco IOS 11.2.9 XA Cisco IOS 11.2.8 SA3 Cisco IOS 11.1.16 IA Cisco IOS 11.1.16 Cisco IOS 11.1.15 CA Cisco IOS 11.1.13 CA Cisco IOS 11.1.13 AA Cisco IOS 11.1.13 Cisco IOS 11.0.20 .3 Cisco IOS 11.0.17 BT Cisco IOS 12.4XB Cisco IOS 12.4XA Cisco IOS 12.4T Cisco IOS 12.4MR Cisco IOS 12.4 Cisco IOS 12.3YU Cisco IOS 12.3YT Cisco IOS 12.3YS Cisco IOS 12.3YQ Cisco IOS 12.3YK Cisco IOS 12.3YJ Cisco IOS 12.3YI Cisco IOS 12.3YH Cisco IOS 12.3YG Cisco IOS 12.3YF Cisco IOS 12.3YD Cisco IOS 12.3YA Cisco IOS 12.3XY Cisco IOS 12.3XX Cisco IOS 12.3XW Cisco IOS 12.3XU Cisco IOS 12.3XS Cisco IOS 12.3XR Cisco IOS 12.3XQ Cisco IOS 12.3XM Cisco IOS 12.3XK Cisco IOS 12.3XJ Cisco IOS 12.3XI Cisco IOS 12.3XH Cisco IOS 12.3XG Cisco IOS 12.3XF Cisco IOS 12.3XE Cisco IOS 12.3XD Cisco IOS 12.3XC Cisco IOS 12.3XB Cisco IOS 12.3XA Cisco IOS 12.3TPC Cisco IOS 12.3T Cisco IOS 12.3JX Cisco IOS 12.3JK Cisco IOS 12.3JA Cisco IOS 12.3BW Cisco IOS 12.3BC Cisco IOS 12.3B Cisco IOS 12.3 Cisco IOS 12.2ZP Cisco IOS 12.2ZN Cisco IOS 12.2ZL Cisco IOS 12.2ZJ Cisco IOS 12.2ZH Cisco IOS 12.2ZG Cisco IOS 12.2ZF Cisco IOS 12.2ZE Cisco IOS 12.2ZD Cisco IOS 12.2ZC Cisco IOS 12.2ZB Cisco IOS 12.2ZA Cisco IOS 12.2YZ Cisco IOS 12.2YY Cisco IOS 12.2YX Cisco IOS 12.2YW Cisco IOS 12.2YV Cisco IOS 12.2YU Cisco IOS 12.2YT Cisco IOS 12.2YS Cisco IOS 12.2YR Cisco IOS 12.2YQ Cisco IOS 12.2YP Cisco IOS 12.2YO Cisco IOS 12.2YN Cisco IOS 12.2YM Cisco IOS 12.2YL Cisco IOS 12.2YK Cisco IOS 12.2YJ Cisco IOS 12.2YH Cisco IOS 12.2YG Cisco IOS 12.2YF Cisco IOS 12.2YE Cisco IOS 12.2YD Cisco IOS 12.2YC Cisco IOS 12.2YB Cisco IOS 12.2YA Cisco IOS 12.2XW Cisco IOS 12.2XV Cisco IOS 12.2XU Cisco IOS 12.2XT Cisco IOS 12.2XS Cisco IOS 12.2XR Cisco IOS 12.2XQ Cisco IOS 12.2XN Cisco IOS 12.2XM Cisco IOS 12.2XL Cisco IOS 12.2XK Cisco IOS 12.2XJ Cisco IOS 12.2XI Cisco IOS 12.2XH Cisco IOS 12.2XG Cisco IOS 12.2XF Cisco IOS 12.2XE Cisco IOS 12.2XD Cisco IOS 12.2XC Cisco IOS 12.2XB Cisco IOS 12.2XA Cisco IOS 12.2TPC Cisco IOS 12.2T Cisco IOS 12.2SZ Cisco IOS 12.2SY Cisco IOS 12.2SXF Cisco IOS 12.2SXE Cisco IOS 12.2SXD Cisco IOS 12.2SXB Cisco IOS 12.2SXA Cisco IOS 12.2SX Cisco IOS 12.2SW Cisco IOS 12.2SV Cisco IOS 12.2SU Cisco IOS 12.2SO Cisco IOS 12.2SG Cisco IOS 12.2SE Cisco IOS 12.2SBC Cisco IOS 12.2S Cisco IOS 12.2MC Cisco IOS 12.2MB Cisco IOS 12.2JK Cisco IOS 12.2JA Cisco IOS 12.2FY Cisco IOS 12.2FX Cisco IOS 12.2EZ Cisco IOS 12.2EY Cisco IOS 12.2EX Cisco IOS 12.2EWA Cisco IOS 12.2EW Cisco IOS 12.2EU Cisco IOS 12.2DX Cisco IOS 12.2DD Cisco IOS 12.2DA Cisco IOS 12.2CZ Cisco IOS 12.2CY Cisco IOS 12.2CX Cisco IOS 12.2BZ Cisco IOS 12.2BY Cisco IOS 12.2BX Cisco IOS 12.2BC Cisco IOS 12.2B Cisco IOS 12.2(4)XR Cisco IOS 12.2(2)XR Cisco IOS 12.2(15)XR Cisco IOS 12.2 Cisco IOS 12.1YJ Cisco IOS 12.1YI Cisco IOS 12.1YH Cisco IOS 12.1YF Cisco IOS 12.1YE Cisco IOS 12.1YD Cisco IOS 12.1YC Cisco IOS 12.1YB Cisco IOS 12.1YA Cisco IOS 12.1XY Cisco IOS 12.1XX Cisco IOS 12.1XW Cisco IOS 12.1XV Cisco IOS 12.1XU Cisco IOS 12.1XT Cisco IOS 12.1XS Cisco IOS 12.1XR Cisco IOS 12.1XQ Cisco IOS 12.1XP Cisco IOS 12.1XM Cisco IOS 12.1XL Cisco IOS 12.1XJ Cisco IOS 12.1XI Cisco IOS 12.1XH Cisco IOS 12.1XG Cisco IOS 12.1XF Cisco IOS 12.1XE Cisco IOS 12.1XD Cisco IOS 12.1XC Cisco IOS 12.1XB Cisco IOS 12.1XA Cisco IOS 12.1T Cisco IOS 12.1EZ Cisco IOS 12.1EY Cisco IOS 12.1EX Cisco IOS 12.1EW Cisco IOS 12.1EV Cisco IOS 12.1EU Cisco IOS 12.1EO Cisco IOS 12.1EC Cisco IOS 12.1EB Cisco IOS 12.1EA Cisco IOS 12.1E Cisco IOS 12.1DC Cisco IOS 12.1DB Cisco IOS 12.1DA Cisco IOS 12.1CX Cisco IOS 12.1AZ Cisco IOS 12.1AY Cisco IOS 12.1AX Cisco IOS 12.1AA Cisco IOS 12.1 Cisco IOS 12.0XV Cisco IOS 12.0XS Cisco IOS 12.0XR Cisco IOS 12.0XQ Cisco IOS 12.0XN Cisco IOS 12.0XM Cisco IOS 12.0XL Cisco IOS 12.0XK Cisco IOS 12.0XJ Cisco IOS 12.0XI Cisco IOS 12.0XH Cisco IOS 12.0XG Cisco IOS 12.0XF Cisco IOS 12.0XE Cisco IOS 12.0XD Cisco IOS 12.0XC Cisco IOS 12.0XB Cisco IOS 12.0XA Cisco IOS 12.0WC Cisco IOS 12.0W5 Cisco IOS 12.0T Cisco IOS 12.0SZ Cisco IOS 12.0SX Cisco IOS 12.0ST Cisco IOS 12.0SP Cisco IOS 12.0SL Cisco IOS 12.0SC Cisco IOS 12.0S Cisco IOS 12.0DC Cisco IOS 12.0DB Cisco IOS 12.0DA Cisco IOS 12.0 Cisco IOS 11.1
Not Vulnerable:	Cisco IOS 12.4(5) Cisco IOS 12.4(4)T Cisco IOS 12.4(3a) Cisco IOS 12.4(2)XB Cisco IOS 12.4(2)XA Cisco IOS 12.4(2)T1 Cisco IOS 12.4(2)MR1 Cisco IOS 12.4(1b) Cisco IOS 12.3(9e) Cisco IOS 12.3(9a)BC7 Cisco IOS 12.3(8)YI3 Cisco IOS 12.3(8)YG3 Cisco IOS 12.3(8)T11 Cisco IOS 12.3(7)XR6 Cisco IOS 12.3(7)XI7 Cisco IOS 12.3(7)T12 Cisco IOS 12.3(7)JX Cisco IOS 12.3(7)JA1 Cisco IOS 12.3(6f) Cisco IOS 12.3(5f) Cisco IOS 12.3(4)XK4 Cisco IOS 12.3(4)XG5 Cisco IOS 12.3(4)XE4 Cisco IOS 12.3(4)TPC11a Cisco IOS 12.3(4)JA1 Cisco IOS 12.3(3i) Cisco IOS 12.3(2)XC4 Cisco IOS 12.3(2)XA5 Cisco IOS 12.3(2)JK1 Cisco IOS 12.3(2)JA5 Cisco IOS 12.3(16) Cisco IOS 12.3(15b) Cisco IOS 12.3(14)YU1 Cisco IOS 12.3(14)YT1 Cisco IOS 12.3(14)YQ3 Cisco IOS 12.3(14)T4 Cisco IOS 12.3(13b) Cisco IOS 12.3(13a)BC1 Cisco IOS 12.3(12e) Cisco IOS 12.3(11)YS1 Cisco IOS 12.3(11)YK2 Cisco IOS 12.3(11)YF4 Cisco IOS 12.3(11)T8 Cisco IOS 12.3(10e) Cisco IOS 12.2(8)TPC10a Cisco IOS 12.2(4)YA11 Cisco IOS 12.2(4)MB13c Cisco IOS 12.2(31) Cisco IOS 12.2(30)S1 Cisco IOS 12.2(29a) Cisco IOS 12.2(28c) Cisco IOS 12.2(27b) Cisco IOS 12.2(27)SV1 Cisco IOS 12.2(27)SBC Cisco IOS 12.2(26b) Cisco IOS 12.2(26)SV1 Cisco IOS 12.2(25)SW4a Cisco IOS 12.2(25)SW4 Cisco IOS 12.2(25)SG Cisco IOS 12.2(25)SED Cisco IOS 12.2(25)SEC2 Cisco IOS 12.2(25)SEB4 Cisco IOS 12.2(25)S6 Cisco IOS 12.2(25)FY Cisco IOS 12.2(25)FX Cisco IOS 12.2(25)EY3 Cisco IOS 12.2(25)EX Cisco IOS 12.2(25)EWA4 Cisco IOS 12.2(25)EWA3 Cisco IOS 12.2(23f) Cisco IOS 12.2(22)EA6 Cisco IOS 12.2(20)S9 Cisco IOS 12.2(20)EWA3 Cisco IOS 12.2(20)EW3 Cisco IOS 12.2(20)EU2 Cisco IOS 12.2(18)SXF Cisco IOS 12.2(18)SXE3 Cisco IOS 12.2(18)SXD6 Cisco IOS 12.2(18)SO4 Cisco IOS 12.2(18)S10 Cisco IOS 12.2(18)EW5 Cisco IOS 12.2(17f) Cisco IOS 12.2(17d)SXB10 Cisco IOS 12.2(15)YS Cisco IOS 12.2(15)T17 Cisco IOS 12.2(15)MC2e Cisco IOS 12.2(15)JK5 Cisco IOS 12.2(15)CZ3 Cisco IOS 12.2(15)BC2i Cisco IOS 12.2(14)S15 Cisco IOS 12.2(13)ZH8 Cisco IOS 12.2(13)ZD4 Cisco IOS 12.2(12m) Cisco IOS 12.2(12)DA9 Cisco IOS 12.2(10)DA4 Cisco IOS 12.1(8b)E20 Cisco IOS 12.1(27b) Cisco IOS 12.1(26)EB1 Cisco IOS 12.1(26)E3 Cisco IOS 12.1(23)E4 Cisco IOS 12.1(22)EA6 Cisco IOS 12.1(22)EA5a Cisco IOS 12.1(22)EA4a Cisco IOS 12.1(20)EW4 Cisco IOS 12.1(20)EO3 Cisco IOS 12.1(19)EW3 Cisco IOS 12.1(13)EW4 Cisco IOS 12.1(13)E17 Cisco IOS 12.1(12c)EW4 Cisco IOS 12.0(5)WC13 Cisco IOS 12.0(31)S1 Cisco IOS 12.0(30)S4 Cisco IOS 12.0(28d) Cisco IOS 12.0(28)W5-32a Cisco IOS 12.0(28)W5-30b Cisco IOS 12.0(28)S5 Cisco IOS 12.0(25)W5-27d

Cisco IOS System Timers Heap Buffer Overflow Exploitation

Cisco IOS is prone to heap-based buffer-overflow issues. Cisco has released an advisory stating that IOS upgrades are available to address the possibility of exploits of heap-based buffer-overflow vulnerabilities. It is not known at this time if the advisory addresses a specific heap overflow or just provides security enhancements to mitigate attempts to exploit heap-overflow vulnerabilities.

Cisco IOS System Timers Heap Buffer Overflow Exploitation

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: mailto:[email protected].

Cisco IOS System Timers Heap Buffer Overflow Exploitation

Solution:
Cisco has released a security advisory and fixes to address this issue. Please see the referenced advisory for details.

Cisco IOS System Timers Heap Buffer Overflow Exploitation

References:

• Cisco IOS Software (Cisco Systems)
  
• Cisco Security Advisory: IOS Heap-based Overflow Vulnerability in System Timers (Cisco Systems)
  
• IRM Research White Paper: IOS Exploitation Techniques (Gyan Chawdhary)