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7.5

libsass 3.4.5 can crash from malicious input

CVE-2017-11342 · published 9 years ago
Summary

The libsass library version 3.4.5 may read an invalid memory location when processing specially crafted data. This can cause the service using libsass to stop working, effectively a denial of service. Update to a newer version of libsass or apply the vendor's patch to prevent the crash.

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
VendorProductAffected versions
libsass libsass 3.4.5
cpe:2.3:a:libsass:libsass:3.4.5:*:*:*:*:*:*:*
Original advisory text
There is an illegal address access in ast.cpp of LibSass 3.4.5. A crafted input will lead to a remote denial of service attack.
There is an illegal address access in ast.cpp of LibSass 3.4.5. A crafted input will lead to a remote denial of service attack.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
1% chance of attack within 30 days
Type
CWE-20Improper Input Validation
Timeline
Published17 Jul 2017
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2017-11342 · NVD
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