Buffer overflow in Apache HTTP Server

CVE-2018-1301

A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.150 (96.7th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-1301: held from 0.150 to 0.150.

EPSS over last 30 days · oldest: 0.150 · newest: 0.150 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-1301?
CVE-2018-1301 is a medium-severity vulnerability in Apache HTTP Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.9/10. Published 2018-03-26.
How severe is CVE-2018-1301?
Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2018-1301 known to be exploited?
41 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.