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7.5
CVE-2017-12964: libsass 3.4.5 may cause remote service disruption
CVE-2017-12964 · published 9 years ago
Summary
The libsass library version 3.4.5 can run out of memory when handling certain inputs, which could make a website or application stop responding for users. This effect can be triggered by an attacker from outside your network, leading to a denial of service. Update libsass to a newer version or apply the vendor’s patch to prevent the problem.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| libsass | libsass |
3.4.5 cpe:2.3:a:libsass:libsass:3.4.5:*:*:*:*:*:*:* |
Original advisory text
There is a stack consumption issue in LibSass 3.4.5 that is triggered in the function Sass::Eval::operator() in eval.cpp. It will lead to a remote denial of service attack.
There is a stack consumption issue in LibSass 3.4.5 that is triggered in the function Sass::Eval::operator() in eval.cpp. It will lead to a remote denial of service attack.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1482397 Issue Tracking Third Party Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Type
CWE-674Uncontrolled Recursion
Timeline
Published18 Aug 2017
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2017-12964 · NVD
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