PT-2021-7991 · Libslirp+9 · Libslirp+9
Mauro Matteo Cascella
·
Published
2021-06-04
·
Updated
2024-11-08
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CVE-2021-3592
CVSS v3.1
3.8
Low
| Vector | AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
libslirp versions prior to 4.6.0
Description
The issue is related to an invalid pointer initialization in the SLiRP networking implementation, specifically in the
bootp input() function. This could occur when processing a UDP packet smaller than the size of the bootp t structure. A malicious guest could exploit this to leak 10 bytes of uninitialized heap memory from the host, posing a threat to data confidentiality.Recommendations
For libslirp versions prior to 4.6.0, update to version 4.6.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the
bootp input() function to minimize the risk of exploitation.Fix
Access of Uninitialized Pointer
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Red Hat
Rocky Linux
Suse
Ubuntu
Libslirp