CVE-2015-7687
UnknownEPSS 4.09%
Last modified
CVE-2015-7687 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.09% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openbsd | Opensmtpd | <= 5.7.1 |
| Fedoraproject | Fedora | 22 |
| Fedoraproject | Fedora | 23 |
References
- http://www.openwall.com/lists/oss-security/2015/10/03/1Mailing List, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/76975Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1268793Issue Tracking, Third Party Advisory, VDB Entry
- https://www.opensmtpd.org/announces/release-5.7.2.txtRelease Notes, Vendor Advisory
- https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txtExploit, Technical Description, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/10/03/1Mailing List, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/76975Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1268793Issue Tracking, Third Party Advisory, VDB Entry
- https://www.opensmtpd.org/announces/release-5.7.2.txtRelease Notes, Vendor Advisory
- https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txtExploit, Technical Description, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2015-7687?
Severity scoring for CVE-2015-7687 is pending analysis. The EPSS model estimates a 4.09% probability of exploitation in the next 30 days.
How do I fix CVE-2015-7687?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2015-7687?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST