Vulnerability Details : CVE-2021-1104
The RISC-V Instruction Set Manual contains a documented ambiguity for the Machine Trap Vector Base Address (MTVEC) register that may lead to a vulnerability due to the initial state of the register not being defined, potentially leading to information disclosure, data tampering and denial of service.
Vulnerability category: Denial of serviceInformation leak
Products affected by CVE-2021-1104
- cpe:2.3:a:risc-v:instruction_set_manual:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-1104
0.43%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-1104
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-1104
-
The product uses or accesses a resource that has not been initialized.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-1104
-
https://riscv.org/news/2021/08/video-glitching-risc-v-chips-mtvec-corruption-for-hardening-isa-adam-zabrocki-and-alex-matrosov-def-con-29/
Video: Glitching RISC-V chips: MTVEC corruption for hardening ISA | Adam Zabrocki and Alex Matrosov, DEF CON 29 - RISC-V InternationalExploit;Vendor Advisory
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