CVE-2021-21556
14.06.2021, 19:15
Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS contain a stack-based buffer overflow vulnerability in systems with NVDIMM-N installed. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment.Enginsight
| Vendor | Product | Version |
|---|---|---|
| dell | poweredge_r640_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_r740_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_r740xd_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_r940_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_r840_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_r940xa_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_t640_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_mx740c_firmware | 𝑥 < 2.11.2 |
| dell | poweredge_mx840c_firmware | 𝑥 < 2.11.2 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-121 - Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787 - Out-of-bounds WriteThe software writes data past the end, or before the beginning, of the intended buffer.