| Package | Affected versions | Patched versions |
|---|---|---|
| courier mta | = 0.37.3= 0.38.1= 0.40= 0.43= 0.43.1= 0.43.2= 0.44≤ 0.44.2 |
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.
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