Vulnerability in Libslirp Project
CVE-2021-3595
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.
EPSS: 0.003 (25.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.
Affected products
- Libslirp_project Libslirp
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 33, 34
- Redhat Enterprise_linux — versions 8.0
- N/a Qemu — versions libslirp 4.6.0
Weakness classification (CWE)
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list)
Frequently asked questions
- What is CVE-2021-3595?
- CVE-2021-3595 is a low-severity vulnerability in Libslirp Project, classified under Access of Uninitialized Pointer. CVSS score: 3.8/10. Published 2021-06-15.
- How severe is CVE-2021-3595?
- Low severity. CVSS v3 base score is 3.8 out of 10.