Snyk has a published code exploit for this vulnerability.
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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Test your applicationsUpgrade RHEL:8
varnish:6/varnish
to version 0:6.0.6-2.module+el8.4.0+20467+7fe641ed.4 or higher.
This issue was patched in RHSA-2023:6021
.
Note: Versions mentioned in the description apply only to the upstream varnish:6/varnish
package and not the varnish:6/varnish
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.