CVE-2020-10255: Input Validation
First published: Tue Mar 10 2020(Updated: )
Modern DRAM chips (DDR4 and LPDDR4 after 2015) are affected by a vulnerability in deployment of internal mitigations against RowHammer attacks known as Target Row Refresh (TRR), aka the TRRespass issue. To exploit this vulnerability, the attacker needs to create certain access patterns to trigger bit flips on affected memory modules, aka a Many-sided RowHammer attack. This means that, even when chips advertised as RowHammer-free are used, attackers may still be able to conduct privilege-escalation attacks against the kernel, conduct privilege-escalation attacks against the Sudo binary, and achieve cross-tenant virtual-machine access by corrupting RSA keys. The issue affects chips produced by SK Hynix, Micron, and Samsung. NOTE: tracking DRAM supply-chain issues is not straightforward because a single product model from a single vendor may use DRAM chips from different manufacturers.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Micron Ddr4 Sdram | ||
| Micron Lpddr4 | ||
| Samsung Ddr4 | ||
| Samsung Lpddr4 | ||
| Skhynix Ddr4 Sdram | ||
| Skhynix Lpddr4 |
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Reference Links
- https://download.vusec.net/papers/trrespass_sp20.pdf
- https://github.com/vusec/trrespass
- https://thehackernews.com/2020/03/rowhammer-vulnerability-ddr4-dram.html
- https://twitter.com/antumbral/status/1237425959407513600
- https://twitter.com/vu5ec/status/1237399112590467072
- https://www.vusec.net/projects/trrespass/
Frequently Asked Questions
What is the severity of CVE-2020-10255?
The severity of CVE-2020-10255 is classified as high due to its potential to allow unauthorized memory access.
How do I fix CVE-2020-10255?
To mitigate CVE-2020-10255, it's recommended to update to the latest firmware from the memory manufacturers that address the vulnerability.
What types of memory are affected by CVE-2020-10255?
CVE-2020-10255 affects modern DDR4 and LPDDR4 DRAM chips manufactured after 2015.
Can CVE-2020-10255 be exploited remotely?
CVE-2020-10255 requires physical access to the vulnerable hardware for exploitation.
What attack vector is associated with CVE-2020-10255?
CVE-2020-10255 is associated with RowHammer attacks that exploit memory access patterns.
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- vendor/micron
- canonical/micron ddr4 sdram
- canonical/micron lpddr4
- vendor/samsung
- canonical/samsung ddr4
- canonical/samsung lpddr4
- vendor/skhynix
- canonical/skhynix ddr4 sdram
- canonical/skhynix lpddr4