Home/CVE/Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or e
CVE

CVE-2015-7687

Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or e

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.

CRITICAL · CVSS 9.8 EPSS 0.10142
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

2
openbsd opensmtpd<= 5.7.1
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

1
pocwww.qualys.com · opensmtpd-audit-report.txtwww.qualys.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Oct 2017 · 06:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2015/10/03/1Mailing ListThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/76975Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1268793Issue TrackingThird Party AdvisoryVDB Entry
https://www.opensmtpd.org/announces/release-5.7.2.txtRelease NotesVendor Advisory
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