PT-2018-3180 · Apache+3 · Apache Http Server+3

Craig Young · Published 2018-06-18 · Updated 2021-06-06 · CVE-2018-1333

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Apache HTTP Server versions 2.4.18 through 2.4.30, 2.4.33

Description The issue is related to the allocation of workers in response to specially crafted HTTP/2 requests, leading to worker exhaustion and a denial of service. This can be exploited by sending specially crafted HTTP/2 requests, allowing a remote attacker to cause a denial of service. The issue only affects servers that have configured and enabled HTTP/2 support.

Recommendations For versions 2.4.18 through 2.4.30, 2.4.33, update to Apache HTTP Server 2.4.34 to resolve the issue. As a temporary workaround, consider disabling HTTP/2 support to minimize the risk of exploitation.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

ALT-PU-2018-2068

BDU:2019-04311

CVE-2018-1333

MGASA-2018-0460

OPENSUSE-SU-2018_2397-1

OPENSUSE-SU-2018_2433-1

RHSA-2018:3558

RHSA-2019:0367

SUSE-SU-2018:2336-1

SUSE-SU-2018:2424-1

SUSE-SU-2018_2336-1

SUSE-SU-2018_2424-1

USN-3783-1

Affected Products

Alt Linux

Apache Http Server

Suse

Ubuntu

References · 74

• https://bdu.fstec.ru/vul/2018-01145 · Security Note
• https://bdu.fstec.ru/vul/2021-01497 · Security Note
• https://ubuntu.com/security/CVE-2018-1333 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210611SE16 · Vendor Advisory
• https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-1333 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1302 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-1333 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:0367 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-11763 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:2424-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2019:0366 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2018-1333 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-1333 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11763 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1302 · Security Note