CVE-2020-14309
Last modified
CVE-2020-14309 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Grub2 | < 2.06 |
| Opensuse | Leap | 15.1 |
| Opensuse | Leap | 15.2 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022Issue Tracking, Third 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 List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1852022Issue Tracking, Third 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
Timeline
- Published
- Last Modified
- Status
- Modified
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