Affected: AlmaLinux:8: libecap, AlmaLinux:8: libecap-devel

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Security Fix(es):

* squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow (CVE-2019-12519)

* squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution (CVE-2020-11945)

* squid: parsing of header Proxy-Authentication leads to memory corruption (CVE-2019-12525)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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.

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.

Affected: openEuler:20.03-LTS: squid, openEuler:20.03-LTS-SP1: squid

Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\n Security Fix(es):\r\n\r\n 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 its 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 wont overflow.(CVE-2019-12519)\r\n\r\n

Security update for squid

squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution

Security update for squid

Affected: Ubuntu:16.04:LTS: squid3, Ubuntu:18.04:LTS: squid3, Ubuntu:20.04:LTS: squid

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.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Squid ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes auszuführen oder Sicherheitsvorkehrungen zu umgehen.