Bug 1783439 (CVE-2019-19648) - CVE-2019-19648 yara: out-of-bounds memory access in macho_parse_file in macho/macho.c
Summary: CVE-2019-19648 yara: out-of-bounds memory access in macho_parse_file in macho...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-19648
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: 1783440 1783442
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-12-13 18:46 UTC by Guilherme de Almeida Suckevicz
Modified: 2019-12-13 20:09 UTC (History)
1 user (show)

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Last Closed: 2019-12-13 20:09:25 UTC
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Description Guilherme de Almeida Suckevicz 2019-12-13 18:46:52 UTC 
In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may be inconsistent with the real size. A specially crafted MachO file can cause an out-of-bounds memory access, resulting in Denial of Service (application crash) or potential code execution.

Reference:
https://github.com/VirusTotal/yara/issues/1178
Comment 1 Guilherme de Almeida Suckevicz 2019-12-13 18:47:06 UTC 
Created yara tracking bugs for this issue:

Affects: epel-all [bug 1783442]
Affects: fedora-all [bug 1783440]
Comment 2 Product Security DevOps Team 2019-12-13 20:09:25 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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