vulnerability
Ubuntu: (Multiple Advisories) (CVE-2025-49630): Apache HTTP Server vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Jul 10, 2025 | Jul 17, 2025 | Aug 21, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Jul 10, 2025
Added
Jul 17, 2025
Modified
Aug 21, 2025
Description
In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2.
Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".
Solution
ubuntu-pro-upgrade-apache2
References
- CVE-2025-49630
- https://attackerkb.com/topics/CVE-2025-49630
- CWE-617
- UBUNTU-USN-7639-1
- UBUNTU-USN-7639-2
- URL-https://httpd.apache.org/security/vulnerabilities_24.html
- URL-https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2025-49630
- URL-https://ubuntu.com/security/notices/USN-7639-1
- URL-https://www.cve.org/CVERecord?id=CVE-2025-49630
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