Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Grub2 | < 2.06 |
| Opensuse | Leap | 15.1 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022Issue TrackingThird Party Advisory
- https://security.gentoo.org/glsa/202104-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
- https://usn.ubuntu.com/4432-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022Issue TrackingThird Party Advisory
- https://security.gentoo.org/glsa/202104-05Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
- https://usn.ubuntu.com/4432-1/Third Party Advisory
FAQ
What is CVE-2020-14309?
CVE-2020-14309 is a vulnerability with a CVSS score of 6.7 (MEDIUM). 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 ove...
How severe is CVE-2020-14309?
CVE-2020-14309 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-14309?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Grub2, Opensuse Leap.