PT-2025-29118 · Apache+11 · Apache Http Server+11

Anthony Corsiez · Published 2025-06-04 · Updated 2026-01-22 · CVE-2025-49630

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Apache HTTP Server versions 2.4.26 through 2.4.63

Description: In specific proxy setups, an untrusted client can trigger a denial of service against Apache HTTP Server. This occurs due to an assertion within the mod proxy http2 module when ProxyPreserveHost is set to "on" and a reverse proxy is configured for an HTTP/2 backend.

Recommendations: Update to a version later than 2.4.63.

Fix

DoS

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

ALSA-2025:14625

ALSA-2025:14983

ALSA-2025:15123

ALT-PU-2025-9373

ALT-PU-2025-9538

ALT-PU-2025-9540

ALT-PU-2025-9924

AZL-65133

AZL-65142

AZL-65175

AZL-65220

BDU:2025-08695

BIT-APACHE-2025-49630

CESA-2025_15123

CVE-2025-49630

DLA-4270-1

INFSA-2025_14983

INFSA-2025_15123

MGASA-2025-0301

OESA-2025-2076

OPENSUSE-SU-2025:15360-1

OPENSUSE-SU-2026:20810-1

RHSA-2025:13680

RHSA-2025:14625

RHSA-2025:14983

RHSA-2025:15725

RHSA-2025:15726

RHSA-2025:15727

RHSA-2025_14983

RHSA-2025_15123

SUSE-SU-2025:02565-1

SUSE-SU-2025:02682-1

SUSE-SU-2025:02683-1

SUSE-SU-2025:02684-1

SUSE-SU-2025:02685-1

SUSE-SU-2025_02565-1

SUSE-SU-2025_02682-1

SUSE-SU-2025_02683-1

SUSE-SU-2025_02684-1

SUSE-SU-2025_02685-1

USN-7639-1

USN-7639-2

Affected Products

Alt Linux

Almalinux

Apache Http Server

Astra Linux

Centos

Debian

Linuxmint

Red Hat

Red Os

Rocky Linux

Suse

Ubuntu

References · 116

• https://osv.dev/vulnerability/CVE-2025-49630 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-43204 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02682-1 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-65142 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2025:14983 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23048 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7639-2 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-49630 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-49630 · Security Note
• https://ubuntu.com/security/CVE-2024-47252 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2025-1113SE18 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2025-49630 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2025-0923SE17 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02684-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2025-0301 · Vendor Advisory