Vulnerability Details : CVE-2020-25637
A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2020-25637
- cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25637
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 13 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25637
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
6.7
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2020-25637
-
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2020-25637
-
https://security.gentoo.org/glsa/202210-06
libvirt: Multiple Vulnerabilities (GLSA 202210-06) — Gentoo securityThird Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00073.html
[security-announce] openSUSE-SU-2020:1777-1: important: Security updateMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1881037
1881037 – (CVE-2020-25637) CVE-2020-25637 libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.cIssue Tracking;Patch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
[SECURITY] [DLA 3778-1] libvirt security update
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00072.html
[security-announce] openSUSE-SU-2020:1778-1: important: Security updateMailing List;Third Party Advisory
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