Bug 1459012 - (CVE-2017-9438) CVE-2017-9438 yara: Stack consumption via a crafted rule mishandled in the _ur_re_emit function
CVE-2017-9438 yara: Stack consumption via a crafted rule mishandled in the _u...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
: ---
: ---
Assigned To: Red Hat Product Security
impact=low,public=20170606,reported=2...
: Security
Depends On: 1459013
Blocks:
  Show dependency treegraph
 
Reported: 2017-06-06 02:45 EDT by Andrej Nemec
Modified: 2017-06-06 02:49 EDT (History)
1 user (show)

See Also:
Fixed In Version: yara 3.6.0
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Andrej Nemec 2017-06-06 02:45:56 EDT
libyara/re.c in the regexp module in YARA 3.5.0 allows attackers to cause a denial of service (stack consumption) via a crafted rule (involving hex strings) that is mishandled in the _yr_re_emit function, a different vulnerability than CVE-2017-9304.

Upstream issue:

https://github.com/VirusTotal/yara/issues/674

Upstream patch:

https://github.com/VirusTotal/yara/commit/10e8bd3071677dd1fa76beeef4bc2fc427cea5e7
Comment 1 Andrej Nemec 2017-06-06 02:49:11 EDT
Created yara tracking bugs for this issue:

Affects: epel-6 [bug 1459013]

Note You need to log in before you can comment on or make changes to this bug.