CVE-2013-4123
published 2013-09-16CVE-2013-4123: 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…
PriorityP345medium5CVSS 2.0
AVNACLAuNCNINAP
EXPLOIT
EPSS
80.45%
99.6th percentile
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.
Affected
43 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | squid | — | — |
| opensuse | opensuse | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
| squid-cache | squid | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect oversized/non-numeric port values in the HTTP Host header (e.g., Host: <host>:<large_repeated_string>) sent to Squid proxy port 3128; the PoC uses a 4000-byte string ('yc' repeated 2000 times) as the port field. ↗
- →Squid crash/assert triggered by crafted Host header port manifests as 'FATAL: Bungled (null) line' in Squid logs followed by abnormal termination — monitor Squid logs for this pattern. ↗
- →Affected component is client_side_request.cc; the vulnerability is triggered via a crafted port number in the HTTP Host header targeting Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8. ↗
- ·Red Hat Enterprise Linux 5 and 6 ship versions of squid that do not contain the vulnerable code path and are not affected. ↗
- ·Squid service will automatically respawn after the crash, so the DoS may appear intermittent rather than persistent. ↗
CVSS provenance
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
vendor_debian5.0LOW
vendor_redhat5.0MEDIUM
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GHSA
GHSA-gpv8-rwm7-v9hg: client_side_request
ghsa_unreviewed·2022-05-14
CVE-2013-4123 [MEDIUM] CWE-20 GHSA-gpv8-rwm7-v9hg: client_side_request
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.
Red Hat
squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
vendor_redhat·2013-07-13·CVSS 5.0
CVE-2013-4123 [MEDIUM] squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
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.
Package: squid (Red Hat Enterprise Linux 5) - Not affected
Package: squid (Red Hat Enterprise Linux 6) - Not affected
Package: squid (Red Hat Enterprise Linux 7) - Not affected
Debian
CVE-2013-4123: squid - client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allow...
vendor_debian·2013·CVSS 5.0
CVE-2013-4123 [MEDIUM] CVE-2013-4123: squid - client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allow...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
No detection rules found.
Bugzilla
CVE-2013-4123 squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
bugzilla·2013-07-15·CVSS 5.0
CVE-2013-4123 [MEDIUM] CVE-2013-4123 squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
CVE-2013-4123 squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
A denial of service flaw was found in the way Squid, the proxy caching server, used to process port specific information, present in the HTTP Host: header of certain HTTP requests. A remote attacker could provide a specially-crafted HTTP request that, when processed would lead to Squid daemon termination (denial of service).
External References:
http://www.squid-cache.org/Advisories/SQUID-2013_3.txt
Discussion:
Upstream patches:
[1] http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch
(against the 3.2.x branch)
[2] http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch
(against the 3.3.x branch)
---
This issue did not affect the versions
Bugzilla
squid: CVE-2013-4123 squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3) [fedora-all]
bugzilla·2013-07-15·CVSS 5.0
CVE-2013-4123 [MEDIUM] squid: CVE-2013-4123 squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3) [fedora-all]
squid: CVE-2013-4123 squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3) [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When creating a Bodhi update request, please use the bodhi submission link
noted in the next comment(s). This will include the bug IDs of this
tracking bug as well as the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
Bodhi notes field
http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.htmlhttp://secunia.com/advisories/54142http://secunia.com/advisories/54834http://www.squid-cache.org/Advisories/SQUID-2013_3.txthttp://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patchhttp://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patchhttp://lists.opensuse.org/opensuse-updates/2013-09/msg00024.htmlhttp://secunia.com/advisories/54142http://secunia.com/advisories/54834http://www.squid-cache.org/Advisories/SQUID-2013_3.txthttp://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patchhttp://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch
2013-09-16
Published