There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-4735-1 | grub2 security update |
EUVD |
EUVD-2020-6462 | There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow. |
Ubuntu USN |
USN-4432-1 | GRUB 2 vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-04T12:39:36.404Z
Reserved: 2020-06-17T00:00:00
Link: CVE-2020-14310
No data.
Status : Modified
Published: 2020-07-31T22:15:11.500
Modified: 2024-11-21T05:02:58.777
Link: CVE-2020-14310
OpenCVE Enrichment
No data.
Debian DSA
EUVD
Ubuntu USN