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Sicherheitslücken in apache2 · Seite 3

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für apache2: 17. Davon im KEV-Katalog: 0.

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  1. CVE-2025-65082

    Mittel · CVSS 6.5EPSS 0,81%Korrektur verfügbar

    Apache HTTP Server: CGI environment variable override

    Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs. This issue affects Apache HTTP Server from 2.4.0 through 2.4.65. Users are recommended to upgrade to version 2.4.66 which fixes the issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm17 aktualisieren
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  2. CVE-2025-53020

    Hoch · CVSS 7.5EPSS 4,96%Korrektur verfügbar

    Apache HTTP Server: HTTP/2 DoS by Memory Increase

    Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63. Users are recommended to upgrade to version 2.4.64, which fixes the issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm16 aktualisieren
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  3. CVE-2025-49812

    Hoch · CVSS 7.4EPSS 0,61%Korrektur verfügbar

    Apache HTTP Server: mod_ssl TLS upgrade attack

    In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm16 aktualisieren
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  4. CVE-2025-23048

    Kritisch · CVSS 9.1EPSS 1,04%Korrektur verfügbar

    Apache HTTP Server: mod_ssl access control bypass with session resumption

    In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm16 aktualisieren
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  5. CVE-2024-47252

    Hoch · CVSS 7.5EPSS 0,8%Korrektur verfügbar

    Apache HTTP Server: mod_ssl error log variable escaping

    Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations. In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm16 aktualisieren
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  6. CVE-2024-43204

    Hoch · CVSS 7.5EPSS 0,91%Korrektur verfügbar

    Apache HTTP Server: SSRF with mod_headers setting Content-Type header

    SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker.  Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm16 aktualisieren
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  7. CVE-2024-42516

    Hoch · CVSS 7.5EPSS 0,82%Korrektur verfügbar

    Apache HTTP Server: HTTP response splitting

    HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm16 aktualisieren
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  8. CVE-2024-39573

    Hoch · CVSS 7.5EPSS 35,45%Korrektur verfügbar

    Apache HTTP Server: mod_rewrite proxy handler substitution

    Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm17 aktualisieren
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  9. CVE-2024-38477

    Hoch · CVSS 7.5EPSS 3,15%Korrektur verfügbar

    Apache HTTP Server: Crash resulting in Denial of Service in mod_proxy via a malicious request

    null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm13 aktualisieren
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  10. CVE-2024-38476

    Kritisch · CVSS 9.8EPSS 41,61%Korrektur verfügbar

    Apache HTTP Server may use exploitable/malicious backend application output to run local handlers via internal redirect

    Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm13 aktualisieren
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  11. CVE-2024-38475

    Kritisch · CVSS 9.1EPSS 99,96%Im KEV-KatalogÖffentlicher ExploitKorrektur verfügbar

    Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.

    Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected.  Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm13 aktualisieren
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  12. CVE-2024-38474

    Hoch · CVSS 8.1EPSS 2,46%Korrektur verfügbar

    Apache HTTP Server weakness with encoded question marks in backreferences

    Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm14 aktualisieren
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  13. CVE-2024-38473

    Hoch · CVSS 8.1EPSS 25,88%Öffentlicher ExploitKorrektur verfügbar

    Apache HTTP Server proxy encoding problem

    Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm17 aktualisieren
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  14. CVE-2024-27316

    Hoch · CVSS 7.5EPSS 91,33%Korrektur verfügbar

    Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames

    HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm12 aktualisieren
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  15. CVE-2024-24795

    Mittel · CVSS 6.3EPSS 2,87%Korrektur verfügbar

    Apache HTTP Server: HTTP Response Splitting in multiple modules

    HTTP Response splitting in multiple modules in Apache HTTP Server allows an attacker that can inject malicious response headers into backend applications to cause an HTTP desynchronization attack. Users are recommended to upgrade to version 2.4.59, which fixes this issue.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm12 aktualisieren
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  18. CVE-2023-25690

    Kritisch · CVSS 9.8EPSS 84,51%Öffentlicher ExploitKorrektur verfügbar

    Apache HTTP Server: HTTP request splitting with mod_rewrite and mod_proxy

    Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, something like: RewriteEngine on RewriteRule "^/here/(.*)" "http://example.com:8080/elsewhere?$1"; [P] ProxyPassReverse /here/ http://example.com:8080/ Request splitting/smuggling could result in bypass of acc

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm10 aktualisieren
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  19. CVE-2022-37436

    Mittel · CVSS 5.3EPSS 55,91%Korrektur verfügbar

    Apache HTTP Server: mod_proxy prior to 2.4.55 allows a backend to trigger HTTP response splitting

    Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm9 aktualisieren
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  20. CVE-2022-36760

    Kritisch · CVSS 9EPSS 1,93%Korrektur verfügbar

    Apache HTTP Server: mod_proxy_ajp Possible request smuggling

    Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions.

    apache2Betriebssysteme
    • Auf 2.4.18-2ubuntu3.17+esm8 aktualisieren
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