Note:
This project will be discontinued after December 13, 2021. [more]
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.
Products | Ubuntu_linux, Debian_linux, Leap, Squid |
Type | Out-of-bounds Write (CWE-787) |
First patch | - None (likely due to unavailable code) |
Links |
• https://security.netapp.com/advisory/ntap-20210205-0006/
• https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html • http://www.openwall.com/lists/oss-security/2020/04/23/1 • https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12519.txt • https://www.debian.org/security/2020/dsa-4682 |