7.5

CVE-2018-8011: apache software foundation apache http server NULL Pointer Dereference

CVSS: 7.5v3.0HighModified
AliasesALPINE-CVE-2018-8011UBUNTU-CVE-2018-8011DEBIAN-CVE-2018-8011
Published 18-07-2018Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2018-8011 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in apache software foundation apache http server. EPSS estimates a 55.61% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
55.61%
0%100%
Critical · -0.43 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
SUSE-SU-2018:2424-1

Timeline

  1. 18-07-2018
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

55.61%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

-0.43 pp

From 56.04% on 18-09-2026

18-09-202618-10-2026
EPSS score
55.61%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • apache2< 2.4.34-r0
Apache1 product
Apache software foundation1 product
Debian1 product
  • apache2< 2.4.34-1
Netapp1 product
Ubuntu1 product
  • apache2< 2.4.7-1ubuntu4.20 | < 2.4.18-2ubuntu3.9 | < 2.4.29-1ubuntu4.2

6 vendors · 6 products

References

20 links
Show all 20 references