CVE-2020-10713

moderate-risk
Published 2020-07-30

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.

Do I need to act?

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0.26% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.2/10 High
LOCAL / LOW complexity

Affected Products (5)

Photon Os

Affected Vendors

Debian Gnu Vmware Opensuse

References (26)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
Mailing List http://www.openwall.com/lists/oss-security/2020/07/29/3
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1825243
Broken Link https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713
Technical Description https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
Third Party Advisory https://kb.vmware.com/s/article/80181
Third Party Advisory https://security.gentoo.org/glsa/202104-05
Third Party Advisory https://security.netapp.com/advisory/ntap-20200731-0008/
Third Party Advisory https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-g...
Third Party Advisory https://usn.ubuntu.com/4432-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4735
Third Party Advisory https://www.kb.cert.org/vuls/id/174059
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
Mailing List http://www.openwall.com/lists/oss-security/2020/07/29/3
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1825243
Broken Link https://cve.openeuler.org/#/CVEInfo/CVE-2020-10713
Technical Description https://eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
Third Party Advisory https://kb.vmware.com/s/article/80181
and 6 more references
38
/ 100
moderate-risk
Severity 25/34 · High
Exploitability 1/34 · Minimal
Exposure 12/34 · Low