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 Debian:12
courier
to version 0.53.2-1 or higher.
Note: Versions mentioned in the description apply only to the upstream courier
package and not the courier
package as distributed by Debian
.
See How to fix?
for Debian:12
relevant fixed versions and status.
libs/comverp.c in Courier MTA before 0.53.2 allows attackers to cause a denial of service (CPU consumption) via unknown vectors involving usernames that contain the "=" (equals) character, which is not properly handled during encoding.