The vulnerability of Squid proxy server’s mechanism for processing URN responses is related to the lack of a mechanism for verifying the size of copied data. This allows attackers to access confidential data, compromise its integrity, and cause service failures.

The vulnerability of the Squid proxy server’s mechanism for processing URN responses is related to the lack of a mechanism for checking the size of the copied data. Exploiting this vulnerability can allow an attacker operating remotely to gain access to confidential data, compromise its integrity...

Squid < 4.9 Multiple Vulnerabilities

According to its self-reported version number, the version of Squid installed on the remote host is prior to 4.9. It is, therefore, affected by multiple vulnerabilities: - A heap overflow and possible a remote code execution exist due to incorrect buffer management when processing URN...

Authorization Bypass

squid is vulnerable to authorization bypass. When handling a URN request, the corresponding HTTP request that is made does not go through the access checks, allowing an attacker to bypass access checks and gain access to restricted HTTP servers such as HTTP servers listening on localhost...

Arbitrary Code Execution

squid is vulnerable to arbitrary code execution. The vulnerability exists as a heap-based buffer overflow could occur when receiving data from a remote server in response to an URN request, and when squid fails to ensure that the response can fit within the buffer...

Ubuntu 16.04 LTS / 18.04 LTS : Squid vulnerabilities (USN-4446-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4446-1 advisory. Jeriko One discovered that Squid incorrectly handled caching certain requests. A remote attacker could possibly use this issue to perform...

USN-4446-1 squid3 vulnerabilities

Jeriko One discovered that Squid incorrectly handled caching certain requests. A remote attacker could possibly use this issue to perform cache-injection attacks or gain access to reverse proxy features such as ESI. CVE-2019-12520 Jeriko One and Kristoffer Danielsson discovered that Squid...

CVE-2019-12523

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers,...

Internet Bug Bounty: URN Request bypass ACL Checks

Summary: Attacker can bypass ACL checks gaining access to restricted HTTP servers such as those running on localhost. Attacker could also gain access to CacheManager if VIA header is turned off. Only lines with : will be readable though, and the response must be less than 4096 bytes or it'll...

Internet Bug Bounty: UrnState Heap Overflow

Summary: When handling a URN Request an attacker controlled response can cause Squid to overflow a heap buffer. The buffer exist within a struct so not only does it allow an attacker to overflow adjacent memory, but also control a pointer that follows the buffer enabling them to free arbitrary...

Security fix for the ALT Linux 9 package squid version 4.10-alt1

4.10-alt1 built March 16, 2020 Alexey Shabalin in task 247850 --- March 14, 2020 Alexey Shabalin - Updated to 4.10. - Fixes: + CVE-2019-12526 Heap Overflow issue in URN processing. + CVE-2019-12523 Multiple issues in URI processing. + CVE-2019-18676 Multiple issues in URI processing. +...

SUSE SLES12 Security Update : squid (SUSE-SU-2020:0661-1)

This update for squid fixes the following issues : CVE-2019-12528: Fixed an information disclosure flaw in the FTP gateway bsc1162689. CVE-2019-12526: Fixed potential remote code execution during URN processing bsc1156326. CVE-2019-12523,CVE-2019-18676: Fixed multiple improper validations in URI...

EulerOS 2.0 SP5 : squid (EulerOS-SA-2020-1133)

According to the versions of the squid package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - 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...

D-Link ssdpcgi Unauthenticated Remote Command Execution

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'D-Link Devices Unauthenticated Remote Command Execution in ssdpcgi', 'Description' = %q D-Link Devices Unauthenticated Remote Command Execution i...

CVE-2019-20217

D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via the urn: to the M-SEARCH method in ssdpcgi in /htdocs/cgibin, because SERVERID is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an attack...

CVE-2019-20216

D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via the urn: to the M-SEARCH method in ssdpcgi in /htdocs/cgibin, because REMOTEPORT is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an...

CVE-2019-20215

D-Link DIR-859 1.05 and 1.06B01 Beta01 devices allow remote attackers to execute arbitrary OS commands via a urn: to the M-SEARCH method in ssdpcgi in /htdocs/cgibin, because HTTPST is mishandled. The value of the urn: service/device is checked with the strstr function, which allows an attacker t...

EulerOS 2.0 SP8 : squid (EulerOS-SA-2020-1034)

According to the versions of the squid package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go throu...

USN-4213-1: Squid vulnerabilities

Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly handled certain URN requests. A remote attacker could possibly use this issue to bypass access checks and access restricted servers. This issue was only addressed in Ubuntu 19.04 and Ubuntu 19.10. CVE-2019-12523 Jeriko One...

CVE-2019-12523

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers,...

CVE-2019-12526

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data...