CVE-2021-28308: 
Rust vulnerability analysis and mitigation

The vulnerability (CVE-2021-28308) was discovered in the fltk crate versions before 0.15.3 for Rust. The issue was disclosed on March 12, 2021, affecting the pixmap constructor functionality in the fltk library. The vulnerability stems from insufficient input validation in the pixmap constructor, which could lead to security implications (RustSec Advisory).

The vulnerability is characterized by an out-of-bounds read condition that occurs due to the lack of proper pixmap input validation in the pixmap constructor. The issue has been assigned a CVSS score of 6.4, indicating a medium severity level. The vulnerability specifically affects the fltk::image::Pixmap::new function in versions <0.15.2 and >=0.14.12 (RustSec Advisory).

When exploited, this vulnerability could allow an attacker to perform out-of-bounds read operations, potentially leading to unauthorized access to memory contents outside the intended boundaries. This could result in information disclosure or system instability (CISA Bulletin).

The vulnerability has been patched in fltk version 0.15.3 and later. Users are advised to upgrade to this version or newer to address the security issue. The fix includes proper input validation for the pixmap constructor (RustSec Advisory).