CVE-2021-3595

Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 15 Jun 2021, 00:00
Last modified:03 Aug 2024, 17:01

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.8 LOW
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

15 Jun 2021, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 17:01
Last Modified
Vulnerability information updated

Description

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the tftp_input() function and could occur while processing a udp packet that is smaller than the size of the 'tftp_t' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

CVSS Metrics

  • v3.1•LOW•Score: 3.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.03%• Percentile: 7%

Techniques & Countermeasures

  • CWE-824•Access of Uninitialized Pointer

    The product accesses or uses a pointer that has not been initialized.

Affected Systems

  • debian•debian_linux

    9.0

  • fedoraproject•fedora

    33 | 34

  • libslirp_project•libslirp

    < 4.6.0

  • redhat•enterprise_linux

    8.0

References (7)