CVEvulnerability
CVE-2020-14309
6.7 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-07-30
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-190, CWE-787
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.
Affected configurations
• gnu grub2 (< 2.06)
• opensuse leap 15.1
• opensuse leap 15.2
Related
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022 Issue Tracking, 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/ Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022 Issue Tracking, 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/ Third Party Advisory