CVE-2013-4123 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 80.5% (pctl 100)
Patch early
A public exploit exists.
Description
client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 80.45% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2013-09-16 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| opensuse | opensuse |
| squid-cache | squid |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Squid 3.3.5 - Denial of Service (PoC) | 2013-07-16 |
References
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html
- http://secunia.com/advisories/54142
- http://secunia.com/advisories/54834
- http://www.squid-cache.org/Advisories/SQUID-2013_3.txt
- http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch
- http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html
- http://secunia.com/advisories/54142
- http://secunia.com/advisories/54834
- http://www.squid-cache.org/Advisories/SQUID-2013_3.txt
- http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch
- http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch
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