Critical severity · published Oct 16, 2017
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…
9.8
CVSS
4.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
22; 23 · source: NVD
OP
Opensmtpd · Openbsd
through 5.7.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-7687
CVE.org
https://www.cve.org/CVERecord?id=CVE-2015-7687
Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html
Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html
Mailing List
http://www.openwall.com/lists/oss-security/2015/10/03/1
Third Party Advisory
http://www.securityfocus.com/bid/76975
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1268793
Release Notes
https://www.opensmtpd.org/announces/release-5.7.2.txt
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