Use After Free in Openbsd Opensmtpd
CVE-2015-7687
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.
Vulnerability class: Use-After-Free
EPSS: 0.101 (93.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Openbsd Opensmtpd
- Fedoraproject Fedora — versions 22, 23
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, VDB Entry, Third Party Advisory)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, VDB Entry, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2015-7687?
- CVE-2015-7687 is a critical-severity vulnerability in Openbsd Opensmtpd, classified under Use After Free. CVSS score: 9.8/10. Published 2017-10-16.
- How severe is CVE-2015-7687?
- Critical severity. CVSS v3 base score is 9.8 out of 10.