Bug 1588682 (CVE-2018-11693) - CVE-2018-11693 libsass: Heap buffer over read in function Sass::Prelexer::skip_over_scopes in prelexer.hpp
Summary: CVE-2018-11693 libsass: Heap buffer over read in function Sass::Prelexer::ski...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-11693
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1588684 1588683 1588685
Blocks: 1754498
TreeView+ depends on / blocked
 
Reported: 2018-06-07 17:29 UTC by Pedro Sampaio
Modified: 2021-10-25 09:55 UTC (History)
2 users (show)

Fixed In Version: libsass 3.6.0
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Clone Of:
Environment:
Last Closed: 2021-10-25 09:55:19 UTC
Embargoed:

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Description Pedro Sampaio 2018-06-07 17:29:06 UTC 
An issue was discovered in LibSaas through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::skip_over_scopes which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.

Upstream issue:

https://github.com/sass/libsass/issues/2661
Comment 1 Pedro Sampaio 2018-06-07 17:29:23 UTC 
Created libsass tracking bugs for this issue:

Affects: epel-7 [bug 1588684]
Affects: fedora-all [bug 1588685]
Comment 3 Riccardo Schirone 2020-01-14 16:40:07 UTC 
Upstream fix:
https://github.com/sass/libsass/commit/b3374e3fd1a0c3658644d2bad24e4a0ff2e0dcea
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