CVE-2019-0196: apache software foundation apache http server Use After Free
Vulnerability summary
CVE-2019-0196 is a medium (CVSS 5.3) Use After Free vulnerability in apache software foundation apache http server. EPSS estimates a 19.96% chance of exploitation in the next 30 days, higher than 97.4% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 4Timeline
- 11-06-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request incorrectly.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
19.96%
Chance of exploitation in the next 30 days
Percentile
97%
Versus all other CVEs
30-day change
No change 0.00 pp
From 19.96% on 04-10-2026
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.
Debian2 products
- apache2< 2.4.38-3
- debian_linuxEOL9.0
Alpine1 product
- apache2< 2.4.39-r0
Apache1 product
- http_server≥ 2.4.17, ≤ 2.4.38
Apache software foundation1 product
- apache http server2.4.17 to 2.4.38
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Ubuntu1 product
- apache2< 2.4.29-1ubuntu4.6
6 vendors · 7 products
References
42 links- www.openwall.com/lists/oss-security/2019/04/02/1Mailing ListX Refsource MLISTMitigationThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.htmlVendor AdvisoryX Refsource SUSEMailing ListPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.htmlVendor AdvisoryX Refsource SUSEMailing ListPatchThird Party Advisory
Show all 42 references
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.htmlVendor AdvisoryX Refsource SUSEMailing ListPatchThird Party Advisory
- security.netapp.com/advisory/ntap-20190617-0002/X Refsource CONFIRM
- www.oracle.com/security-alerts/cpuapr2020.htmlX Refsource MISC