Vulnerabilities > CVE-2013-7049 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in ZNC Znc-Msvc
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
Stack-based buffer overflow in fish.cpp in the Fish plugin for ZNC, as used in ZNC for Windows (znc-msvc) 0.206 and earlier, allows remote attackers to cause a denial of service (crash) via a long string in a DH1080_INIT message.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 14 |
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.
Seebug
| bulletinFamily | exploit |
| description | Bugtraq ID:64254 CVE ID:CVE-2013-7049 ZNC是一个IRC代理，允许用户从工作站登录到IRC服务器。 ZNC IRC Bouncer Fish插件fish.cpp在初始化新查询时，程序在处理对方发送的公钥数据时没有进行正确的边界检查，可导致"raw_buf"缓冲区被溢出，导致拒绝服务攻击。 0 ZNC IRC Bouncer Fish plugin 目前厂商暂无提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本： https://code.google.com/p/znc-msvc/source/browse/trunk/main/znc-msvc/modules/extra_win32/fish.cpp |
| id | SSV:61117 |
| last seen | 2017-11-19 |
| modified | 2013-12-16 |
| published | 2013-12-16 |
| reporter | Root |
| title | ZNC IRC Bouncer Fish插件远程拒绝服务漏洞 |