CVE-2020-35679

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Summary:

smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a “very significant” memory leak via messages to an instance that performs many regex lookups.

Reference Links(if available):

  • https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043
  • https://www.mail-archive.com/[email protected]/msg05188.html
  • https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/
  • CVSS Score (if available)

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

    v3: / HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

    Links to Exploits(if available)