Use After Free Affecting opensmtpd package, versions <5.7.3p1-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-OPENSMTPD-309302
- published16 Oct 2017
- disclosed16 Oct 2017
Introduced: 16 Oct 2017
CVE-2015-7687 (opens in a new tab)How to fix?
Upgrade Debian:unstable opensmtpd to version 5.7.3p1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream opensmtpd package and not the opensmtpd package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
References
- https://security-tracker.debian.org/tracker/CVE-2015-7687
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html
- https://www.opensmtpd.org/announces/release-5.7.2.txt
- https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt
- http://www.openwall.com/lists/oss-security/2015/10/03/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1268793
- http://www.securityfocus.com/bid/76975