CVE-2018-19839
First published: Tue Dec 04 2018(Updated: )
In LibSass prior to 3.5.5, the function handle_error in sass_context.cpp allows attackers to cause a denial-of-service resulting from a heap-based buffer over-read via a crafted sass file.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libsass | <3.5.5 | |
| IBM Data Virtualization on Cloud Pak for Data | <=3.0 | |
| IBM Watson Query with Cloud Pak for Data as a Service | <=2.2 | |
| IBM Watson Query with Cloud Pak for Data as a Service | <=2.1 | |
| IBM Watson Query with Cloud Pak for Data as a Service | <=2.0 | |
| IBM Data Virtualization on Cloud Pak for Data | <=1.8 | |
| IBM Data Virtualization on Cloud Pak for Data | <=1.7 |
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Reference Links
- https://github.com/sass/libsass/pull/2767
- https://github.com/sass/libsass/issues/2657
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
- https://www.ibm.com/support/pages/node/7183851 (Advisory)
Frequently Asked Questions
What is CVE-2018-19839?
CVE-2018-19839 is a vulnerability in LibSass prior to version 3.5.5 that allows attackers to cause a denial-of-service by exploiting a heap-based buffer over-read.
What is the severity of CVE-2018-19839?
The severity of CVE-2018-19839 is medium, with a severity score of 6.5.
How does CVE-2018-19839 affect LibSass?
CVE-2018-19839 affects LibSass versions prior to 3.5.5.
How can attackers exploit CVE-2018-19839?
Attackers can exploit CVE-2018-19839 by crafting a malicious sass file that triggers a heap-based buffer over-read.
Is there a fix for CVE-2018-19839?
Yes, the fix for CVE-2018-19839 is to upgrade LibSass to version 3.5.5 or newer.
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