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.
References
Link | Resource |
---|---|
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=CVE-2020-14310 | Issue Tracking Vendor Advisory |
https://security.gentoo.org/glsa/202104-05 | Third Party Advisory |
https://usn.ubuntu.com/4432-1/ | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2020-07-31T20:55:55
Updated: 2021-05-01T01:08:02
Reserved: 2020-06-17T00:00:00
Link: CVE-2020-14310
JSON object: View
NVD Information
Status : Modified
Published: 2020-07-31T22:15:11.500
Modified: 2023-11-07T03:17:08.007
Link: CVE-2020-14310
JSON object: View
Redhat Information
No data.