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CVSS: 7.5EPSS: 1%CPEs: 5EXPL: 0

Squid is vulnerable to Denial of Service attack against HTTP and HTTPS clients due to an Improper Handling of Structural Elements bug. Squid es vulnerable a ataques de Denegación de Servicio contra clientes HTTP y HTTPS debido a un error en el manejo inadecuado de elementos estructurales. A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. However, Squid may grow a cached HTTP response header beyond the configured maximum size, causing a stall or crash of the worker process when a large header is retrieved from the disk cache, resulting in a denial of service. • https://access.redhat.com/errata/RHSA-2023:7465 https://access.redhat.com/errata/RHSA-2023:7668 https://access.redhat.com/errata/RHSA-2024:0072 https://access.redhat.com/errata/RHSA-2024:0397 https://access.redhat.com/errata/RHSA-2024:0771 https://access.redhat.com/errata/RHSA-2024:0772 https://access.redhat.com/errata/RHSA-2024:0773 https://access.redhat.com/errata/RHSA-2024:1153 https://access.redhat.com/security/cve/CVE-2023-5824 https://bugzilla.redhat.com/show • CWE-755: Improper Handling of Exceptional Conditions •

CVSS: 9.3EPSS: 1%CPEs: 19EXPL: 0

SQUID is vulnerable to HTTP request smuggling, caused by chunked decoder lenience, allows a remote attacker to perform Request/Response smuggling past firewall and frontend security systems. SQUID es vulnerable al contrabando de solicitudes HTTP, causado por la indulgencia de los decodificadores fragmentados, lo que permite a un atacante remoto realizar el contrabando de solicitudes/respuestas a través del firewall y los sistemas de seguridad frontales. • https://access.redhat.com/errata/RHSA-2023:6266 https://access.redhat.com/errata/RHSA-2023:6267 https://access.redhat.com/errata/RHSA-2023:6268 https://access.redhat.com/errata/RHSA-2023:6748 https://access.redhat.com/errata/RHSA-2023:6801 https://access.redhat.com/errata/RHSA-2023:6803 https://access.redhat.com/errata/RHSA-2023:6804 https://access.redhat.com/errata/RHSA-2023:6810 https://access.redhat.com/errata/RHSA-2023:7213 https://access.redhat.com/security/cve&# • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •

CVSS: 8.6EPSS: 0%CPEs: 1EXPL: 0

Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. • http://www.squid-cache.org/Versions/v5/SQUID-2023_4.patch http://www.squid-cache.org/Versions/v6/SQUID-2023_4.patch https://github.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810 https://github.com/squid-cache/squid/security/advisories/GHSA-73m6-jm96-c6r3 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC https: • CWE-125: Out-of-bounds Read CWE-129: Improper Validation of Array Index CWE-295: Improper Certificate Validation CWE-786: Access of Memory Location Before Start of Buffer CWE-823: Use of Out-of-range Pointer Offset CWE-1285: Improper Validation of Specified Index, Position, or Offset in Input •

CVSS: 8.6EPSS: 0%CPEs: 1EXPL: 0

A buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB authentication helpers are vulnerable to reading unintended memory locations. In some configurations, cleartext credentials from these locations are sent to a client. This is fixed in 5.7. Se descubrió una lectura excesiva del búfer en libntlmauth en Squid 2.5 a 5.6. • http://www.squid-cache.org/Versions/v4/changesets/SQUID-2022_2.patch http://www.squid-cache.org/Versions/v5/changesets/SQUID-2022_2.patch https://github.com/squid-cache/squid/security/advisories/GHSA-394c-rr7q-6g78 https://www.openwall.com/lists/oss-security/2022/09/23/2 https://access.redhat.com/security/cve/CVE-2022-41318 https://bugzilla.redhat.com/show_bug.cgi?id=2129771 • CWE-126: Buffer Over-read CWE-190: Integer Overflow or Wraparound •

CVSS: 7.5EPSS: 3%CPEs: 6EXPL: 0

In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses. En Squid versiones 3.x hasta 3.5.28, versiones 4.x hasta 4.17 y versiones 5.x anteriores a 5.6, debido a una administración inapropiada del búfer, puede producirse una denegación de servicio cuando son procesadas respuestas largas del servidor Gopher A vulnerability was found in squid (Web proxy cache server). This issue occurs due to improper buffer management while processing Gopher server responses. This flaw leads to a remote denial of service or a crash if it receives specially crafted network traffic, either by mistake or a malicious actor. • http://www.openwall.com/lists/oss-security/2023/10/13/1 http://www.openwall.com/lists/oss-security/2023/10/13/10 http://www.openwall.com/lists/oss-security/2023/10/21/1 http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9 https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w https:/&# • CWE-617: Reachable Assertion •