cve-2020-14310
Vulnerability from cvelistv5
Published
2020-07-31 20:55
Modified
2024-08-04 12:39
Severity ?
5.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Summary
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
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14310Issue Tracking, Vendor Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202104-05Third Party Advisory
secalert@redhat.comhttps://usn.ubuntu.com/4432-1/Third Party Advisory
Impacted products
The Grub2 Projectgrub2
Show details on NVD website

To clipboard 

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