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osvGoogleOSV:BIT-2023-43622
HistoryNov 02, 2023 - 7:16 a.m.

BIT-2023-43622

2023-11-0207:16:32
Google
osv.dev
377
attacker
http/2
apache http server

AI Score

6.6

Confidence

High

EPSS

0.001

Percentile

27.4%

An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known “slow loris” attack pattern.This has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout.This issue affects Apache HTTP Server: from 2.4.55 through 2.4.57.Users are recommended to upgrade to version 2.4.58, which fixes the issue.