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2 vulnerabilities found for libnbd by [UNKNOWN]

CVE-2019-14842 (GCVE-0-2019-14842)

Vulnerability from cvelistv5 – Published: 2019-11-26 15:01 – Updated: 2024-08-05 00:26
VLAI?
Summary
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.
Severity ?
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
[UNKNOWN] libnbd Affected: 1.0.3
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Show details on NVD website
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CVE-2019-14842 (GCVE-0-2019-14842)

Vulnerability from nvd – Published: 2019-11-26 15:01 – Updated: 2024-08-05 00:26
VLAI?
Summary
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.
Severity ?
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
[UNKNOWN] libnbd Affected: 1.0.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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