Dell Edge Gateway BIOS, versions 3200 and 5200, contains an out-of-bounds write vulnerability. A local authenticated malicious user with high privileges could potentially exploit this vulnerability leading to exposure of some UEFI code, leading to arbitrary code execution or escalation of privilege.
Weakness
The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.
Potential Mitigations
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, in Java, if the programmer does not explicitly initialize a variable, then the code could produce a compile-time error (if the variable is local) or automatically initialize the variable to the default value for the variable’s type. In Perl, if explicit initialization is not performed, then a default value of undef is assigned, which is interpreted as 0, false, or an equivalent value depending on the context in which the variable is accessed.
References