Vulnerability · Published Nov 10, 2023 · Assigned by Google
CVE-2023-4949Memory Corruption Vulnerability in Grub-Legacy's XFS Implementation
High 8.1
In plain English
A high-severity memory corruption in Grub-Legacy from Free Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.2%top 84.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | grub | no fix listed | DEBIAN-CVE-2023-4949 |
| Debian:13 | grub | no fix listed | DEBIAN-CVE-2023-4949 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Free Software Foundation | Grub-Legacy | 0 – through 0.97 |
Weakness: CWE-119, CWE-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H