PT-2021-7993 · Libslirp+9 · Libslirp+9
Mauro Matteo Cascella
·
Published
2021-06-04
·
Updated
2023-03-15
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CVE-2021-3595
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
tftp input() function. This flaw can occur when processing a UDP packet smaller than the size of the tftp t structure, potentially leading to out-of-bounds read access or indirect host memory disclosure to the guest. The primary threat is 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
tftp 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