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CVE-2019-14842

Quick assessment

Affected
[UNKNOWN] libnbd
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.

libnbd是一款用于编辑NBD（Network Block Device）客户端的库。 libnbd中存在输入验证错误漏洞。攻击者可利用该漏洞执行任意代码。

AI Predicted 9.8 Difficulty: Easy EPSS 1.85% · P78

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2019-14842

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Structured reply is a feature of the newstyle NBD protocol allowing the server to send a reply in chunks. A bounds check which was supposed to test for chunk offsets smaller than the beginning of the request did not work because of signed/unsigned confusion. If one of these chunks contains a negative offset then data under control of the server is written to memory before the read buffer supplied by the client. If the read buffer is located on the stack then this allows the stack return address from nbd_pread() to be trivially modified, allowing arbitrary code execution under the control of the server. If the buffer is located on the heap then other memory objects before the buffer can be overwritten, which again would usually lead to arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
数值类型间的不正确转换
Source: CVE Program / CVE List V5
Vulnerability Title
libnbd 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libnbd是一款用于编辑NBD（Network Block Device）客户端的库。 libnbd中存在输入验证错误漏洞。攻击者可利用该漏洞执行任意代码。
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
[UNKNOWN] libnbd 1.0.3 -

II. Public POCs for CVE-2019-14842

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III. Intelligence Information for CVE-2019-14842

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Vendor Advisories for CVE-2019-14842 (1)

Other References for CVE-2019-14842 (1)

Same Patch Batch · [UNKNOWN] · 2019-11-26 · 5 CVEs total

CVE-2019-14856 Ansible 授权问题漏洞
CVE-2019-14853 python-ecdsa 安全漏洞
CVE-2019-14857 ZmartZone IAM mod_auth_openidc 输入验证错误漏洞
CVE-2019-14890 Ansible Tower 安全漏洞

IV. Related Vulnerabilities

Same product: libnbd
Same vendor: [UNKNOWN]
Same weakness: CWE-681

V. Comments for CVE-2019-14842

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