CVE-2017-9438

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Summary:

libyara/re.c in the regexp module in YARA 3.5.0 allows remote 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.

Reference Links(if available):

  • https://github.com/VirusTotal/yara/issues/674
  • https://github.com/VirusTotal/yara/commit/10e8bd3071677dd1fa76beeef4bc2fc427cea5e7
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/
  • CVSS Score (if available)

    v2: / MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

    v3: / HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

    Links to Exploits(if available)