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Search Results (Refine Search)

Search Parameters:
  • Results Type: Overview
  • Keyword (text search): cpe:2.3:a:squid-cache:squid:4.9:*:*:*:*:*:*:*
  • CPE Name Search: true
There are 20 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2021-31807

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

Published: June 08, 2021; 4:15:09 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2021-33620

Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.

Published: May 28, 2021; 8:15:07 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2021-31808

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this.

Published: May 27, 2021; 10:15:07 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2021-31806

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.

Published: May 27, 2021; 9:15:08 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2021-28662

An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.

Published: May 27, 2021; 8:15:08 AM -0400
V3.1: 6.5 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2021-28652

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

Published: May 27, 2021; 8:15:08 AM -0400
V3.1: 4.9 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2021-28651

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.

Published: May 27, 2021; 8:15:08 AM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-25097

An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings.

Published: March 19, 2021; 1:15:12 AM -0400
V3.1: 8.6 HIGH
V2.0: 5.0 MEDIUM
CVE-2021-28116

Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.

Published: March 09, 2021; 5:15:12 PM -0500
V3.1: 5.3 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2020-15811

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.

Published: September 02, 2020; 1:15:11 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2020-15810

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.

Published: September 02, 2020; 1:15:11 PM -0400
V3.1: 6.5 MEDIUM
V2.0: 3.5 LOW
CVE-2020-24606

Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.

Published: August 24, 2020; 2:15:10 PM -0400
V3.1: 7.5 HIGH
V2.0: 7.1 HIGH
CVE-2020-14058

An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.

Published: June 30, 2020; 3:15:11 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-15049

An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.

Published: June 30, 2020; 2:15:12 PM -0400
V3.1: 8.8 HIGH
V2.0: 6.5 MEDIUM
CVE-2020-11945

An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).

Published: April 23, 2020; 11:15:14 AM -0400
V3.1: 9.8 CRITICAL
V2.0: 7.5 HIGH
CVE-2019-12519

An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow.

Published: April 15, 2020; 4:15:13 PM -0400
V3.1: 9.8 CRITICAL
V2.0: 7.5 HIGH
CVE-2019-12528

An issue was discovered in Squid before 4.10. It allows a crafted FTP server to trigger disclosure of sensitive information from heap memory, such as information associated with other users' sessions or non-Squid processes.

Published: February 04, 2020; 4:15:10 PM -0500
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-8517

An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.

Published: February 04, 2020; 3:15:14 PM -0500
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-8450

An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.

Published: February 04, 2020; 3:15:14 PM -0500
V3.1: 7.3 HIGH
V2.0: 7.5 HIGH
CVE-2020-8449

An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.

Published: February 04, 2020; 3:15:14 PM -0500
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM