CVE-2013-4123 describes a denial-of-service vulnerability in Squid versions 3.2.x before 3.2.13 and 3.3.x before 3.3.8, affecting products like openSUSE Squid. This flaw allows remote attackers to crash the Squid proxy server by sending a specially crafted HTTP Host header containing an invalid port number. With a CVSS score of 5.0, this vulnerability is easily exploitable over the network with low attack complexity, leading to a partial denial of service. While not listed in CISA's KEV catalog, a proof-of-concept exploit is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
3.3.0CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.3.0:*:*:*:*:*:*:* | ||
3.3.0.2CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.3.0.2:*:*:*:*:*:*:* | ||
3.3.0.3CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.3.0.3:*:*:*:*:*:*:* | ||
3.3.1CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.3.1:*:*:*:*:*:*:* | ||
3.3.2CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.3.2:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
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