Medium
CVE-2009-0801
Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight,…
Tag: Squid
All CVEs associated with "Squid". Page 2/2 • 177 CVEs.
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About “Squid”
A curated feed of “Squid”-related CVEs appears below. We currently track 177 CVEs for this tag (all time). In the last 365 days, 7 were published. Average CVSS is 6.6 (all time; 7.6 over 365d), and 47% are rated High/Critical (all time). Top CWEs (last 365 days): CWE-416 - Use After Free, CWE-125 - Out-of-bounds Read, CWE-413 - Improper Resource Locking.
In our taxonomy this topic maps to a LOW impact class. Databases, proxies, and web servers often need coordinated restarts and config checks. Patch only modules you deploy, verify TLS and authentication, and tune limits. Use the filters below to sort by CVSS, risk and CWE. Each detail page highlights vendor advisories and mitigation tips.
CVEs tagged with this topic. Filters apply to the whole list (loaded from JSON).
CVSS ≥ 0.0
2009-03-04
2009-02-08
Medium
CVE-2009-0478
Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable a…
2008-05-13
Critical
CVE-2008-1922
Multiple stack-based buffer overflows in Sarg might allow attackers to execute arbitrary code via unknown vectors, probably a crafted Squid log file.
2008-04-01
Medium
CVE-2008-1612
The arrayShrink function (lib/Array.c) in Squid 2.6.STABLE17 allows attackers to cause a denial of service (process exit) via unknown vectors that cause an array to shrink to 0 entries, which trigger…
2008-03-05
Critical
CVE-2008-1167
Stack-based buffer overflow in the useragent function in useragent.c in Squid Analysis Report Generator (Sarg) 2.2.3.1 allows remote attackers to execute arbitrary code via a long Squid proxy server…
Medium
CVE-2008-1168
Cross-site scripting (XSS) vulnerability in Squid Analysis Report Generator (Sarg) 2.2.3.1 allows remote attackers to inject arbitrary web script or HTML via the User-Agent header, which is not prope…
2007-12-04
Medium
CVE-2007-6239
The "cache update reply processing" functionality in Squid 2.x before 2.6.STABLE17 and Squid 3.0 allows remote attackers to cause a denial of service (crash) via unknown vectors related to HTTP heade…
2007-03-21
Medium
CVE-2007-1560
The clientProcessRequest() function in src/client_side.c in Squid 2.6 before 2.6.STABLE12 allows remote attackers to cause a denial of service (daemon crash) via crafted TRACE requests that trigger a…
2007-01-16
Medium
CVE-2007-0247
squid/src/ftp.c in Squid before 2.6.STABLE7 allows remote FTP servers to cause a denial of service (core dump) via crafted FTP directory listing responses, possibly related to the (1) ftpListingFinis…
Medium
CVE-2007-0248
The aclMatchExternal function in Squid before 2.6.STABLE7 allows remote attackers to cause a denial of service (crash) by causing an external_acl queue overload, which triggers an infinite loop.
2006-02-13
High
CVE-2006-0046
squid_redirect script in adzapper before 2006-01-29 allows remote attackers to cause a denial of service (CPU consumption) via a URL with a large number of trailing / (forward slashes), which might p…
2005-10-27
Medium
CVE-2005-3322
Unspecified vulnerability in Squid on SUSE Linux 9.0 allows remote attackers to cause a denial of service (crash) via HTTPs (SSL).
2005-10-20
Medium
CVE-2005-3258
The rfc1738_do_escape function in ftp.c for Squid 2.5 STABLE11 and earlier allows remote FTP servers to cause a denial of service (segmentation fault) via certain "odd" responses.
2005-09-30
Medium
CVE-2005-2917
Squid 2.5.STABLE10 and earlier, while performing NTLM authentication, does not properly handle certain request sequences, which allows attackers to cause a denial of service (daemon restart).
2005-09-07
Medium
CVE-2005-2794
store.c in Squid 2.5.STABLE10 and earlier allows remote attackers to cause a denial of service (crash) via certain aborted requests that trigger an assert error related to STORE_PENDING.
Medium
CVE-2005-2796
The sslConnectTimeout function in ssl.c for Squid 2.5.STABLE10 and earlier allows remote attackers to cause a denial of service (segmentation fault) via certain crafted requests.
2005-05-24
High
CVE-2005-1711
Gibraltar Firewall 2.2 and earlier, when using the ClamAV update to 0.81 for Squid, uses a defunct ClamAV method to scan memory for viruses, which does not return an error code and prevents viruses f…
2005-05-11
Medium
CVE-2005-1519
Squid 2.5 STABLE9 and earlier, when the DNS client port is unfiltered and the environment does not prevent IP spoofing, allows remote attackers to spoof DNS lookups.
2005-05-02
High
CVE-2005-0173
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored b…
Critical
CVE-2005-0194
Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined auth schemes, in a way that effectively removes arguments, which…
High
CVE-2005-0211
Buffer overflow in wccp.c in Squid 2.5 before 2.5.STABLE7 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long WCCP packet, which is processed by a recv…
Medium
CVE-2005-0241
The httpProcessReplyHeader function in http.c for Squid 2.5-STABLE7 and earlier does not properly set the debug context when it is handling "oversized" HTTP reply headers, which might allow remote at…
Medium
CVE-2005-0446
Squid 2.5.STABLE8 and earlier allows remote attackers to cause a denial of service (crash) via certain DNS responses regarding (1) Fully Qualified Domain Names (FQDN) in fqdncache.c or (2) IP address…
Medium
CVE-2005-0813
Buffer overflow in Initial Redirect (ir) Squid Proxy Plug-In 0.1 and 0.2 may allow attackers to cause a denial of service and execute arbitrary code via unknown vectors.
High
CVE-2005-1345
Squid 2.5.STABLE9 and earlier does not trigger a fatal error when it identifies missing or invalid ACLs in the http_access configuration, which could lead to less restrictive ACLs than intended by th…
2005-04-14
Medium
CVE-2005-0718
Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (segmentation fault) by aborting the connection during a (1) PUT or (2) POST request, which causes Squid to access p…
2005-03-08
Low
CVE-2005-0626
Race condition in Squid 2.5.STABLE7 to 2.5.STABLE9, when using the Netscape Set-Cookie recommendations for handling cookies in caches, may cause Set-Cookie headers to be sent to other users, which al…
2005-02-07
Medium
CVE-2005-0174
Squid 2.5 up to 2.5.STABLE7 allows remote attackers to poison the cache or conduct certain attacks via headers that do not follow the HTTP specification, including (1) multiple Content-Length headers…
Medium
CVE-2005-0175
Squid 2.5 up to 2.5.STABLE7 allows remote attackers to poison the cache via an HTTP response splitting attack.
2005-01-27
Medium
CVE-2004-0918
The asn_parse_header function (asn1.c) in the SNMP module for Squid Web Proxy Cache before 2.4.STABLE7 allows remote attackers to cause a denial of service (server restart) via certain SNMP packets w…
2005-01-25
Medium
CVE-2005-0096
Memory leak in the NTLM fakeauth_auth helper for Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (memory consumption).
2005-01-15
Medium
CVE-2005-0094
Buffer overflow in the gopherToHTML function in the Gopher reply parser for Squid 2.5.STABLE7 and earlier allows remote malicious Gopher servers to cause a denial of service (crash) via crafted respo…
Medium
CVE-2005-0095
The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed WCCP messages with source addresses that are spoofed to refer…
2005-01-11
Medium
CVE-2005-0097
The NTLM component in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via a malformed NTLM type 3 message that triggers a NULL dereference.
2004-12-31
Medium
CVE-2004-2479
Squid Web Proxy Cache 2.5 might allow remote attackers to obtain sensitive information via URLs containing invalid hostnames that cause DNS operations to fail, which results in references to previous…
Medium
CVE-2004-2480
Squid Web Proxy Cache 2.3.STABLE5 allows remote attackers to bypass security controls and access arbitrary websites via "@@" sequences in a URL within Internet Explorer.
Medium
CVE-2004-2654
The clientAbortBody function in client_side.c in Squid Web Proxy Cache before 2.6 STABLE6 allows remote attackers to cause a denial of service (segmentation fault) via unspecified vectors that trigge…
2004-11-03
Medium
CVE-2004-0832
The (1) ntlm_fetch_string and (2) ntlm_get_string functions in Squid 2.5.6 and earlier, with NTLM authentication enabled, allow remote attackers to cause a denial of service (application crash) via a…
2004-08-06
Critical
CVE-2004-0541
Buffer overflow in the ntlm_check_auth (NTLM authentication) function for Squid Web Proxy Cache 2.5.x and 3.x, when compiled with NTLM handlers enabled, allows remote attackers to execute arbitrary c…
2004-03-15
High
CVE-2004-0189
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of t…
2004-01-05
High
CVE-2003-0963
Buffer overflows in (1) try_netscape_proxy and (2) try_squid_eplf for lftp 2.6.9 and earlier allow remote HTTP servers to execute arbitrary code via long directory names that are processed by the ls…
2002-12-31
Medium
CVE-2002-2414
Opera 6.0.3, when using Squid 2.4 for HTTPS proxying, does not properly handle when accepting a non-global certificate authority (CA) certificate from a site and establishing a subsequent HTTPS conne…
2002-10-04
High
CVE-2002-0916
Format string vulnerability in the allowuser code for the Stellar-X msntauth authentication module, as distributed in Squid 2.4.STABLE6 and earlier, allows remote attackers to execute arbitrary code…
2002-08-12
High
CVE-2002-0735
Format string vulnerability in the logging() function in C-Note Squid LDAP authentication module (squid_auth_LDAP) 2.0.2 and earlier allows remote attackers to cause a denial of service and possibly…
2002-07-26
High
CVE-2002-0713
Buffer overflows in Squid before 2.4.STABLE6 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code (1) via the MSNT auth helper (msnt_auth) when using denyus…
High
CVE-2002-0714
FTP proxy in Squid before 2.4.STABLE6 does not compare the IP addresses of control and data connections with the FTP server, which allows remote attackers to bypass firewall rules or spoof FTP server…
Medium
CVE-2002-0715
Vulnerability in Squid before 2.4.STABLE6 related to proxy authentication credentials may allow remote web sites to obtain the user's proxy login and password.
2002-03-26
High
CVE-2002-0163
Heap-based buffer overflow in Squid before 2.4 STABLE4, and Squid 2.5 and 2.6 until March 12, 2002 distributions, allows remote attackers to cause a denial of service, and possibly execute arbitrary…
2002-03-08
High
CVE-2002-0067
Squid 2.4 STABLE3 and earlier does not properly disable HTCP, even when "htcp_port 0" is specified in squid.conf, which could allow remote attackers to bypass intended access restrictions.
High
CVE-2002-0068
Squid 2.4 STABLE3 and earlier allows remote attackers to cause a denial of service (core dump) and possibly execute arbitrary code with an ftp:// URL with a larger number of special characters, which…
Low
CVE-2002-0069
Memory leak in SNMP in Squid 2.4 STABLE3 and earlier allows remote attackers to cause a denial of service.
2001-12-06
Medium
CVE-2001-0843
Squid proxy server 2.4 and earlier allows remote attackers to cause a denial of service (crash) via a mkdir-only FTP PUT request.
2001-07-18
High
CVE-2001-1030
Squid before 2.3STABLE5 in HTTP accelerator mode does not enable access control lists (ACLs) when the httpd_accel_host and http_accel_with_proxy off settings are used, which allows attackers to bypas…
2001-03-12
Low
CVE-2001-0142
squid 2.3 and earlier allows local users to overwrite arbitrary files via a symlink attack in some configurations.
1999-12-31
Medium
CVE-1999-1481
Squid 2.2.STABLE5 and below, when using external authentication, allows attackers to bypass access controls via a newline in the user/password pair.
1999-07-25
High
CVE-1999-0710
The Squid package in Red Hat Linux 5.2 and 6.0, and other distributions, installs cachemgr.cgi in a public web directory, which allows remote attackers to use it as an intermediary to connect to othe…
1998-02-20
High
CVE-1999-1273
Squid Internet Object Cache 1.1.20 allows users to bypass access control lists (ACLs) by encoding the URL with hexadecimal escape sequences.