CVE-2020-10713
What it is
A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
At a glance
- Exploitability
- Can be exploited locally on the machine with an admin-level account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.7% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.7% in the next 30 days (EPSS).
- Severity: 8.2 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 1.7% · EPSS, next 30 days
- Weakness
- CWE-120 · Classic buffer overflow
- Record status
- Modified
Affected
- Gnu grub2 < 2.06
- Debian Linux 10.0
- Opensuse Leap 15.1
- Opensuse Leap 15.2
- VMware Photon Os < 2.0
Attack profile CVSS 3.1 · 8.2
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2020-10713.md and follow it. Check whether this project is affected by CVE-2020-10713. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- http://www.openwall.com/lists/oss-security/2020/07/29/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1825243
- https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713
- https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
- https://kb.vmware.com/s/article/80181
- https://security.gentoo.org/glsa/202104-05
- https://security.netapp.com/advisory/ntap-20200731-0008/
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-grub2-code-exec-xLePCAPY
- https://usn.ubuntu.com/4432-1/
- https://www.debian.org/security/2020/dsa-4735
- https://www.kb.cert.org/vuls/id/174059
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- http://www.openwall.com/lists/oss-security/2020/07/29/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1825243
- https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713
- https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
- https://kb.vmware.com/s/article/80181
- https://security.gentoo.org/glsa/202104-05
- https://security.netapp.com/advisory/ntap-20200731-0008/
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-grub2-code-exec-xLePCAPY
- https://usn.ubuntu.com/4432-1/
- https://www.debian.org/security/2020/dsa-4735