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CVSS: 7.5EPSS: 72%CPEs: 18EXPL: 0

26 Nov 2019 — An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks. Se descubrió un problema en Squid versiones 2.x, 3.x y versiones 4.x hasta 4.8. • http://www.squid-cache.org/Advisories/SQUID-2019_11.txt • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 44%CPEs: 9EXPL: 0

15 Aug 2019 — Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it. Debido a una terminación de cadena incorrecta, el archivo cachemgr.cgi de Squid versiones 4.0 hasta 4.7 puede acceder a la memoria no asignada. En sistemas con protecciones de acceso a memoria, esto puede causar que el proceso CGI finalice inesperad... • http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html • CWE-400: Uncontrolled Resource Consumption •

CVSS: 5.9EPSS: 19%CPEs: 22EXPL: 0

11 Jul 2019 — An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as wel... • http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read •

CVSS: 9.8EPSS: 61%CPEs: 12EXPL: 0

11 Jul 2019 — An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. • http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •

CVSS: 8.8EPSS: 17%CPEs: 17EXPL: 0

11 Jul 2019 — An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data. Se detectó un problema en Squid versiones 4.0.23 hasta 4.7. Al comprobar la autenticación básica con la función HttpHeader::getAuth, Squid utiliza un búfer global para almacenar los datos descodificado... • http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 6.1EPSS: 81%CPEs: 2EXPL: 1

05 Jul 2019 — The cachemgr.cgi web module of Squid through 4.7 has XSS via the user_name or auth parameter. El modulo web del archivo cachemgr.cgi de Squid hasta versión 4.7, presenta un problema de tipo XSS por medio del parámetro user_name o auth. It was discovered that Squid incorrectly handled certain SNMP packets. A remote attacker could possibly use this issue to cause memory consumption, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. • http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00067.html • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 6.1EPSS: 20%CPEs: 1EXPL: 1

09 Nov 2018 — Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors. Squid en versiones anteriores a la 4.4 tiene Cross-Site Scripting (XSS) mediante un certificado X.509 manipulado durante la generación de la página de error HTTP(S) para los errores de certificado. • https://github.com/JonathanWilbur/CVE-2018-19131 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 5.9EPSS: 18%CPEs: 2EXPL: 0

09 Nov 2018 — Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet. Squid en versiones anteriores a la 4.4, cuando está habilitado SNMP, permite una denegación de servicio (fuga de memoria) mediante un paquete SNMP. It was discovered that Squid incorrectly handled certain SNMP packets. A remote attacker could possibly use this issue to cause memory consumption, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. • http://www.squid-cache.org/Advisories/SQUID-2018_5.txt • CWE-772: Missing Release of Resource after Effective Lifetime •

CVSS: 7.8EPSS: 18%CPEs: 1EXPL: 0

19 Apr 2018 — This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. • http://www.squid-cache.org/Advisories/SQUID-2018_3.txt • CWE-476: NULL Pointer Dereference •

CVSS: 7.5EPSS: 78%CPEs: 7EXPL: 0

05 Feb 2018 — The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later. Squid Software Foundation Squid HTTP Caching Proxy, en ... • http://www.squid-cache.org/Advisories/SQUID-2018_2.txt • CWE-117: Improper Output Neutralization for Logs CWE-476: NULL Pointer Dereference •