CVE-2023-43622
CVE-2023-43622 · Apache HTTP Server: DoS in HTTP/2 with initial windows size 0
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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.
CVSS 7.5 · Élevée · EPSS 68,8% · Correctif disponible
- Publication
- Mise à jour
Produits et versions concernés
apache httpd
- Versions du logiciel
- ≥ 2.4.55, ≤ 2.4.57: Concernée (semver)
Aucun correctif publié
apache2 Debian:12
- Versions du logiciel
- 2.4.57-2
- 2.4.57-3
- 2.4.58-1
- 2.4.59-1~deb10u1
- 2.4.59-1~deb11u1
- Plages de versions concernées
- ECOSYSTEM: < 2.4.59-1~deb12u1
Mettez à jour vers 2.4.59-1~deb12u1
apache2 Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 2.4.58-1
Mettez à jour vers 2.4.58-1
apache2 Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 2.4.58-1
Mettez à jour vers 2.4.58-1