Vulnerabilities > CVE-2019-15252 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Cisco Spa112 Firmware and Spa122 Firmware
Attack vector
ADJACENT_NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Multiple vulnerabilities in Cisco SPA100 Series Analog Telephone Adapters (ATAs) could allow an authenticated, adjacent attacker to execute arbitrary code with elevated privileges. The vulnerabilities are due to improper validation of user-supplied input to the web-based management interface. An attacker could exploit these vulnerabilities by authenticating to the web-based management interface and sending crafted requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code with elevated privileges. Note: The web-based management interface is enabled by default.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 12 | |
| Hardware | 2 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
| NASL family | CISCO |
| NASL id | CISCO-SA-20191016-SPA-RCE.NASL |
| description | The remote Cisco SPA100 Series device is affected by multiple vulnerabilities: - Multiple remote code execution vulnerabilties. An authenticated attacker can cause a stack overflow leading to control flow change in the Cisco SPA 112/122 device. (CVE-2019-15240, CVE-2019-15241, CVE-2019-15242, CVE-2019-15243, CVE-2019-15244, CVE-2019-15245, CVE-2019-15246, CVE-2019-15247, CVE-2019-15248, CVE-2019-15249, CVE-2019-15250, CVE-2019-15251, CVE-2019-15252) - Multiple cross-site scripting vulnerabilities. An authenticated attacker can inject javascript on the Cisco SPA 112/122 device. (CVE-2019-12702, CVE-2019-12703) - An arbitrary file disclosure vulnerability. An unauthenticated attacker can read any file on the device and elevate local privilege. (CVE-2019-12704) - Multiple privilege escalation vulnerabilites. An authenticated attacker can leak the administrator password hash to escalate local privilege. (CVE-2019-12708, CVE-2019-15257) - A denial of service vulnerability. An authenticated attacker can crash the web service with a malformed request. (CVE-2019-12258) |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 129982 |
| published | 2019-10-17 |
| reporter | This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/129982 |
| title | Cisco SPA100 Series Multiple Vulnerabilities |