CVE-2011-4528
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Unbound是荷兰NLnet实验室负责维护的一套基于C语言的开源递归式DNS服务器软件。 Unbound 1.4.13p2之前的版本中存在漏洞，该漏洞源于其尝试在已签署的区域内复制CNAME记录的进程中释放未分配的内存。远程DNS服务器可借助特制响应导致拒绝服务（守护程序崩溃）。
Possible ATT&CK Techniques 3 AI
T1014 · Rootkit T1200 · Hardware Additions T1531 · Account Access Removal
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I. Basic Information for CVE-2011-4528
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Unbound before 1.4.13p2 attempts to free unallocated memory during processing of duplicate CNAME records in a signed zone, which allows remote DNS servers to cause a denial of service (daemon crash) via a crafted response.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Unbound资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Unbound是荷兰NLnet实验室负责维护的一套基于C语言的开源递归式DNS服务器软件。 Unbound 1.4.13p2之前的版本中存在漏洞，该漏洞源于其尝试在已签署的区域内复制CNAME记录的进程中释放未分配的内存。远程DNS服务器可借助特制响应导致拒绝服务（守护程序崩溃）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2011-4528
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2011-4528 (4)
Mailing List Discussions for CVE-2011-4528 (2)
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http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071525.html vendor-advisory x_refsource_FEDORA
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http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071535.html vendor-advisory x_refsource_FEDORA
Other References for CVE-2011-4528 (1)
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http://unbound.nlnetlabs.nl/downloads/CVE-2011-4528.txt x_refsource_CONFIRM
Same Patch Batch · n/a · 2011-12-20 · 4 CVEs total
| CVE-2011-4723 | D-Link DIR-300路由器加密问题漏洞 | |
| CVE-2011-4717 | zFTPServer ‘rmdir’ 目录遍历漏洞 | |
| CVE-2011-4869 | Unbound 资源管理错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2011-4528
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