CVE-2018-1301: apache software foundation apache http server
Vulnerability summary
CVE-2018-1301 is a medium (CVSS 5.9) vulnerability in apache software foundation apache http server. EPSS estimates a 14.43% chance of exploitation in the next 30 days, higher than 96.6% of scored vulnerabilities.
Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 7Timeline
- 26-03-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
14.43%
Chance of exploitation in the next 30 days
Percentile
97%
Versus all other CVEs
30-day change
Decrease -0.56 pp
From 14.99% on 05-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Netapp4 products
Debian2 products
- apache2< 2.4.33-1
- debian_linuxEOL7.0 | 8.0 | 9.0
Alpine1 product
- apache2< 2.4.33-r0
Apache1 product
- http_server≤ 2.4.29
Apache software foundation1 product
- apache http server2.2.0 to 2.4.29
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 17.10 | 18.04
Redhat1 product
- enterprise_linuxEOL6.0 | 7.0 | 7.4 | 7.5 | 7.6
Ubuntu1 product
- apache2< 2.4.7-1ubuntu4.20 | < 2.4.18-2ubuntu3.8 | < 2.4.29-1ubuntu4.1
8 vendors · 12 products
References
35 links- www.openwall.com/lists/oss-security/2018/03/24/2Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
- support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_usX Refsource CONFIRMThird Party Advisory
Show all 35 references
- lists.debian.org/debian-lts-announce/2018/05/msg00020.htmlMailing ListX Refsource MLISTThird Party Advisory
- www.tenable.com/security/tns-2019-09X Refsource CONFIRM