CVE-2020-14309

Description

There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.

References

https://www.tenable.com/blog/cve-2020-10713-boothole-grub2-bootloader-arbitrary-code-execution-vulnerability

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

https://security.netapp.com/advisory/ntap-20200731-0008/

https://security.gentoo.org/glsa/202104-05

https://bugzilla.redhat.com/show_bug.cgi?id=1852022

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3