A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1926263 | Issue Tracking Patch Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ | |
https://security.gentoo.org/glsa/202104-05 | Third Party Advisory |
https://security.netapp.com/advisory/ntap-20220325-0001/ | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2021-03-03T16:44:34
Updated: 2022-03-25T07:06:31
Reserved: 2020-12-17T00:00:00
Link: CVE-2021-20233
JSON object: View
NVD Information
Status : Modified
Published: 2021-03-03T17:15:12.037
Modified: 2023-11-07T03:29:01.363
Link: CVE-2021-20233
JSON object: View
Redhat Information
No data.
CWE