CVE Vulnerabilities

CVE-2023-20250

Stack-based Buffer Overflow

Published: Sep 06, 2023 | Modified: Nov 21, 2024
CVSS 3.x
7.2
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to improper validation of requests that are sent to the web-based management interface. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary code with root privileges on an affected device. To exploit this vulnerability, the attacker must have valid Administrator credentials on the affected device.

Weakness

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Affected Software

Name Vendor Start Version End Version
Rv110w_firmware Cisco 1.0.0.2 (including) 1.0.0.2 (including)
Rv110w_firmware Cisco 1.0.0.21 (including) 1.0.0.21 (including)
Rv110w_firmware Cisco 1.0.0.30 (including) 1.0.0.30 (including)
Rv110w_firmware Cisco 1.0.1.1 (including) 1.0.1.1 (including)
Rv110w_firmware Cisco 1.0.1.3 (including) 1.0.1.3 (including)
Rv110w_firmware Cisco 1.0.1.6 (including) 1.0.1.6 (including)
Rv110w_firmware Cisco 1.0.1.99 (including) 1.0.1.99 (including)
Rv110w_firmware Cisco 1.0.2.7 (including) 1.0.2.7 (including)
Rv110w_firmware Cisco 1.0.2.99 (including) 1.0.2.99 (including)
Rv110w_firmware Cisco 1.0.3.14 (including) 1.0.3.14 (including)
Rv110w_firmware Cisco 1.0.3.16 (including) 1.0.3.16 (including)
Rv110w_firmware Cisco 1.0.3.22 (including) 1.0.3.22 (including)
Rv110w_firmware Cisco 1.0.3.28 (including) 1.0.3.28 (including)
Rv110w_firmware Cisco 1.0.3.44 (including) 1.0.3.44 (including)
Rv110w_firmware Cisco 1.0.3.45 (including) 1.0.3.45 (including)
Rv110w_firmware Cisco 1.0.3.51 (including) 1.0.3.51 (including)
Rv110w_firmware Cisco 1.0.3.52 (including) 1.0.3.52 (including)
Rv110w_firmware Cisco 1.0.3.54 (including) 1.0.3.54 (including)
Rv110w_firmware Cisco 1.0.3.55 (including) 1.0.3.55 (including)
Rv110w_firmware Cisco 1.1.0.5 (including) 1.1.0.5 (including)
Rv110w_firmware Cisco 1.1.0.6 (including) 1.1.0.6 (including)
Rv110w_firmware Cisco 1.1.0.9 (including) 1.1.0.9 (including)
Rv110w_firmware Cisco 1.2.0.8 (including) 1.2.0.8 (including)
Rv110w_firmware Cisco 1.2.0.9 (including) 1.2.0.9 (including)
Rv110w_firmware Cisco 1.2.0.10 (including) 1.2.0.10 (including)
Rv110w_firmware Cisco 1.2.0.14 (including) 1.2.0.14 (including)
Rv110w_firmware Cisco 1.2.0.15 (including) 1.2.0.15 (including)
Rv110w_firmware Cisco 1.2.0.99 (including) 1.2.0.99 (including)
Rv110w_firmware Cisco 1.2.1.4 (including) 1.2.1.4 (including)
Rv110w_firmware Cisco 1.2.1.7 (including) 1.2.1.7 (including)
Rv110w_firmware Cisco 1.2.2.1 (including) 1.2.2.1 (including)
Rv110w_firmware Cisco 1.2.2.4 (including) 1.2.2.4 (including)
Rv110w_firmware Cisco 1.2.2.5 (including) 1.2.2.5 (including)
Rv110w_firmware Cisco 1.2.2.8 (including) 1.2.2.8 (including)
Rv110w_firmware Cisco 1.3.0.4 (including) 1.3.0.4 (including)
Rv110w_firmware Cisco 1.3.0.7 (including) 1.3.0.7 (including)
Rv110w_firmware Cisco 1.3.0.8 (including) 1.3.0.8 (including)
Rv110w_firmware Cisco 1.3.0.99 (including) 1.3.0.99 (including)
Rv110w_firmware Cisco 1.3.1.1 (including) 1.3.1.1 (including)
Rv110w_firmware Cisco 1.3.1.4 (including) 1.3.1.4 (including)
Rv110w_firmware Cisco 1.3.1.5 (including) 1.3.1.5 (including)
Rv110w_firmware Cisco 1.3.1.7 (including) 1.3.1.7 (including)

Potential Mitigations

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
  • Run or compile the software using features or extensions that randomly arrange the positions of a program’s executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as “rebasing” (for Windows) and “prelinking” (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

References