CVE-2020-25637MediumConfirmedExploit available
AST
AST
Astra Linux Security Bulletins
Astra publishes per-release bulletins that map upstream CVEs to their own package repositories, with remediation timelines tied to the certification level (SE 1.7, CE 2.12, etc.). Indispensable for systems that require ФСТЭК/ФСБ clearance.
Region
RU
Updates
24 ч
License
Открытые данные
Vendor security bulletins for Astra Linux Special Edition and Common Edition — the primary certified Linux OS for Russian defense and critical infrastructure.
https://wiki.astralinux.ru/pages/viewpage.action?pageId=27362056 →Share link
Anyone with the link can open this vulnerability.
A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about ne…
CVSS
6.4
Medium
EPSS
0.01
p40
Published
2020-01-01
Updated
2020-01-01
Description
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.
Tags · CWE
CWE-415
CWE-415VariantDraft
Double Free
The product calls free() twice on the same memory address.
https://cwe.mitre.org/data/definitions/415.html →Open in CWE collection →Affected products
LibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtLibvirtVirtVirt-devel
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Timeline
2020-01-01
Published
2020-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: L
Local (L)
Attack Complexity
AC: H
High (H)
Privileges Required
PR: H
High (H)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.005 · p40
Known exploited (KEV)
No
Known exploits — Сканер-ВС
CVE-2020-25637
github-poc · https://github.com/brahmiboudjema/CVE-2020-25637-libvirt-double-free
Affected products
| Product | Vendor | Status |
|---|---|---|
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| libvirt | Tracked | |
| virt | Tracked | |
| virt-devel | Tracked |
Showing first 20 of 22
Source databases
AST
AST
Astra Linux Security Bulletins
Astra publishes per-release bulletins that map upstream CVEs to their own package repositories, with remediation timelines tied to the certification level (SE 1.7, CE 2.12, etc.). Indispensable for systems that require ФСТЭК/ФСБ clearance.
Region
RU
Updates
24 ч
License
Открытые данные
Vendor security bulletins for Astra Linux Special Edition and Common Edition — the primary certified Linux OS for Russian defense and critical infrastructure.
https://wiki.astralinux.ru/pages/viewpage.action?pageId=27362056 →DEB
DEB
Debian Security Advisories (DSA)
DSAs are published by the Debian Security Team for issues affecting the stable distribution. The downstream tracker (security-tracker.debian.org) additionally maps every CVE to its package-level status across all supported suites.
Region
Intl.
Updates
1 ч
License
Public Domain
Advisories covering the Debian stable and oldstable releases. Ship notes include the exact .deb version that remediates each issue.
https://www.debian.org/security/ →CVE
CVE
National Vulnerability Database
NVD is the U.S. government repository of standards-based vulnerability management data, built on top of the MITRE CVE list. Every record includes CPE applicability statements, CVSS v2 and v3.x base scores, CWE mappings and cross-references to advisories.
Region
US
Updates
15 min
License
Public Domain
Comprehensive catalog of publicly disclosed vulnerabilities with CPE matches, CVSS scoring and reference URLs. De-facto standard for cross-vendor correlation.
https://nvd.nist.gov →RED
RED
Red Hat Security Advisories (RHSA)
Red Hat advisories are authoritative for RHEL-family systems: each record lists the exact package NEVRA fixed, the affected streams, and a Red Hat-assigned severity that may differ from NVD's. Many downstream projects (CentOS Stream, Rocky, Alma) follow these IDs.
Region
US
Updates
1 ч
License
CC BY-SA 4.0
Advisories for Red Hat Enterprise Linux, OpenShift, Ansible and other Red Hat products. Includes detailed backport tracking — critical for long-term-support distributions.
https://access.redhat.com/security/security-updates/ →UBU
UBU
Ubuntu Security Notices (USN)
USNs are authoritative for Ubuntu systems. The CVE Tracker links each vulnerability to its per-release status (needed, released, not-affected) and to the exact Launchpad bug where the fix is integrated.
Region
Intl.
Updates
1 ч
License
CC BY-SA 3.0
Security notices for Ubuntu LTS and interim releases, covering main, universe and (via Pro) ESM-extended packages.
https://ubuntu.com/security/notices →Related vulnerabilities