Release Date: | 2020-04-15 |
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.
See more information about CVE-2019-12519 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
Base Score: | 9.8 | Base Metrics: | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Access Vector: | Network | Attack Complexity: | Low |
Privileges Required: | None | User Interaction: | None |
Scope: | Unchanged | Confidentiality Impact: | High |
Integrity Impact: | High | Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 7 (squid) | ELSA-2020-2040 | 2020-05-07 |
Oracle Linux version 8 (libecap) | ELSA-2020-2041 | 2020-05-12 |
Oracle Linux version 8 (squid) | ELSA-2020-2041 | 2020-05-12 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team