CVE-2019-18798 : LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents

LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents in ast_sel_weave.cpp.

Published 2019-11-06 16:15:11

Updated 2019-11-08 19:43:34

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2019-18798

Sass-lang » Libsass
Versions before (<) 3.6.3
cpe:2.3:a:sass-lang:libsass:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.10%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 40 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:N/A:P	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	2.8	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

https://github.com/sass/libsass/issues/2999

Heap Buffer Overflow in sassc · Issue #2999 · sass/libsass · GitHub
Exploit;Third Party Advisory

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