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.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| squid-cache | squid | 3.0 - 3.5.28 | - |
| squid-cache | squid | 4.0 - 4.10 | - |
| squid-cache | squid | 5.0 - 5.0.1 |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10
Affected Products
16
References
squid-cache / squid
| - |
| debian | debian_linux | - | - |
| debian | debian_linux | - | - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| opensuse | leap | - | - |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability
Impact