CVE-2016-4553 is a cache-poisoning vulnerability affecting Squid versions before 3.5.18 and 4.x before 4.0.10, impacting various Linux distributions. This flaw arises from Squid's failure to properly ignore the Host header when an absolute-URI is provided in an HTTP request. With a CVSS score of 8.6 (HIGH), it presents a low-complexity network attack vector that can lead to high integrity impact, allowing attackers to manipulate cached content. Despite its high severity and EPSS score, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
12.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* | ||
14.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | ||
15.10CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* | ||
16.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | ||
<= 3.5.17CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.