Security Advisory

CVE-2019-12519

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2020-04-15 19:20:41

Last updated 2024-08-04 23:24:37

Assigner mitre

State PUBLISHED

Description

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.

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