CVE-2017-7679

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 39.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-06-20 · updated 2026-06-17
Weakness: CWE-126

Description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_mime can read one byte past the end of a buffer when sending a malicious Content-Type response header.

Affected products

Apache HTTP Server: from 2.2.0 before 2.2.33; from 2.4.0 before 2.4.26 — fixed in 2.2.33, 2.4.26

How to fix

Upgrade to a fixed version: Apache HTTP Server 2.2.33, 2.4.26. Check the vendor advisory for mitigations.

References

http://www.debian.org/security/2017/dsa-3896
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.securityfocus.com/bid/99170
http://www.securitytracker.com/id/1038711
https://access.redhat.com/errata/RHSA-2017:2478
https://access.redhat.com/errata/RHSA-2017:2479
https://access.redhat.com/errata/RHSA-2017:2483
https://access.redhat.com/errata/RHSA-2017:3193
https://access.redhat.com/errata/RHSA-2017:3194
https://access.redhat.com/errata/RHSA-2017:3195
https://access.redhat.com/errata/RHSA-2017:3475
https://access.redhat.com/errata/RHSA-2017:3476

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