CVE-2020-14308

low-risk

Published 2020-07-29

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

Do I need to act?

0.03% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.4/10 Medium

LOCAL / HIGH complexity

Affected Products (3)

Grub2

Leap

Affected Vendors

Gnu Opensuse

References (20)

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

Mailing List http://www.openwall.com/lists/oss-security/2021/09/17/2

Mailing List http://www.openwall.com/lists/oss-security/2021/09/17/4

Mailing List http://www.openwall.com/lists/oss-security/2021/09/21/1

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1852009

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://usn.ubuntu.com/4432-1/