CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
70.0%
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.
Vendor | Product | Version | CPE |
---|---|---|---|
micron | ddr4_sdram | - | cpe:2.3:h:micron:ddr4_sdram:-:*:*:*:*:*:*:* |
micron | lpddr4 | - | cpe:2.3:h:micron:lpddr4:-:*:*:*:*:*:*:* |
samsung | ddr4 | - | cpe:2.3:h:samsung:ddr4:-:*:*:*:*:*:*:* |
samsung | lpddr4 | - | cpe:2.3:h:samsung:lpddr4:-:*:*:*:*:*:*:* |
skhynix | ddr4_sdram | - | cpe:2.3:h:skhynix:ddr4_sdram:-:*:*:*:*:*:*:* |
skhynix | lpddr4 | - | cpe:2.3:h:skhynix:lpddr4:-:*:*:*:*:*:*:* |
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
70.0%