The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Affected versions of this package are vulnerable to Use After Free in the DamageDestroy
function. An attacker can escalate privileges or cause denial of service by triggering a use-after-free issue during shutdown or reset of the Xvfb server. This is only exploitable if a multi-screen setup with multiple protocol screens, also known as Zaphod mode, is used and the pointer is warped from a screen 1 to a screen 0.
Mitigation: This vulnerability can be mitigated by starting Xvfb with the -noreset command line option which limits the use-after-free from being triggered only at the Xvfb server shutdown.