Vulnerability Details CVE-2020-14309
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.5%
CVSS Severity
CVSS v3 Score 6.7
CVSS v2 Score 4.6
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022
- https://security.gentoo.org/glsa/202104-05
- https://security.netapp.com/advisory/ntap-20200731-0008/
- https://usn.ubuntu.com/4432-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022
- https://security.gentoo.org/glsa/202104-05
- https://security.netapp.com/advisory/ntap-20200731-0008/
- https://usn.ubuntu.com/4432-1/
Products affected by CVE-2020-14309
-
cpe:2.3:a:gnu:grub2:-
-
cpe:2.3:a:gnu:grub2:1.98
-
cpe:2.3:a:gnu:grub2:1.99
-
cpe:2.3:a:gnu:grub2:2.00
-
cpe:2.3:a:gnu:grub2:2.01
-
cpe:2.3:a:gnu:grub2:2.02
-
cpe:2.3:a:gnu:grub2:2.04
-
cpe:2.3:o:opensuse:leap:15.1
-
cpe:2.3:o:opensuse:leap:15.2