CVE-2021-46102 Information

Description

From version 0.2.14 to 0.2.16 for Solana rBPF function elocate\ in the file src/elf.rs has an integer overflow bug because the sym.st_value is read directly from ELF file without checking. If the sym.st_value is rather large an integer overflow is triggered while calculating the variable ddr\ via ddr = (sym.st_value + refd_pa) as u64;

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://blocksecteam.medium.com/new-integer-overflow-bug-discovered-in-solana-rbpf-7729717159ee https://github.com/solana-labs/rbpf/pull/236 https://github.com/solana-labs/rbpf/blob/c14764850f0b83b58aa013248eaf6d65836c1218/src/elf.rs#L609-L630 https://github.com/solana-labs/rbpf/pull/200

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5