CVE catalog

CVE-2017-9789

apache2: CVE-2017-9789

Severity: Medium · CVSS 6.5CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
Published: Jul 11, 2017, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 9.58% · Oct 25, 2026

When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behaviour.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	apache2	sid	`2.4.69-1`	not affected
Debian	apache2	forky	`2.4.69-1`	not affected
Debian	apache2	trixie	`2.4.68-1~deb13u1`	not affected
Debian	apache2	trixie-security	`2.4.69-1~deb13u1`	not affected
Debian	apache2	bookworm	`2.4.68-1~deb12u1`	not affected
Debian	apache2	bookworm-security	`2.4.67-1~deb12u3`	not affected
Alpine	apache2	3.3	`2.4.27-r0`	fixed
Alpine	apache2	3.4	`2.4.27-r0`	fixed
Alpine	apache2	3.5	`2.4.27-r0`	fixed
Alpine	apache2	3.6	`2.4.27-r0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	apache2	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	apache2	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	apache2	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	apache2	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Alpine	apache2	apk	3.3	`2.4.27-r0`	Not reported	ALPINE-CVE-2017-9789	Not reported
Alpine	apache2	apk	3.4	`2.4.27-r0`	Not reported	ALPINE-CVE-2017-9789	Not reported
Alpine	apache2	apk	3.5	`2.4.27-r0`	Not reported	ALPINE-CVE-2017-9789	Not reported
Alpine	apache2	apk	3.6	`2.4.27-r0`	Not reported	ALPINE-CVE-2017-9789	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[apache2]Unknown
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-bin]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-data]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · all · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · all · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-dev]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-doc]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · all · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · all · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-ssl-dev]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-suexec-custom]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-suexec-pristine]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[apache2-utils]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[libapache2-mod-md]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
[libapache2-mod-proxy-uwsgi]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · apache2 · debian · bookworm

Observed: Oct 23, 2026, 5:32:05 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]