CVE-2017-7668
7.5
HIGH
CVSS 3.1
EPSS 64.8%
Description
The HTTP strict parsing changes added in Apache httpd 2.2.32 and 2.4.24 introduced a bug in token list parsing, which allows ap_find_token() to search past the end of its input string. By maliciously crafting a sequence of request headers, an attacker may be able to cause a segmentation fault, or to force ap_find_token() to return an incorrect value.
How to fix CVE-2017-7668
To remediate CVE-2017-7668, upgrade the affected package to a fixed version below.
- —upgrade to 2.4.26-r0 or later
- —upgrade to 2.4.25-4 or later
Is CVE-2017-7668 being exploited?
Likely — EPSS is 64.8%, placing CVE-2017-7668 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (2)
- from 0, < 2.4.26-r0
- from 0, < 2.4.25-4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |