Vulnerability 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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openbsd | Opensmtpd | <= 5.7.1 |
| Fedoraproject | Fedora | 22 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.hThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htThird 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
- https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txtExploitTechnical DescriptionThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.hThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htThird 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
- https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txtExploitTechnical DescriptionThird Party Advisory
FAQ
What is CVE-2015-7687?
CVE-2015-7687 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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?
CVE-2015-7687 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2015-7687?
Check the references section above for vendor advisories and patch information. Affected products include: Openbsd Opensmtpd, Fedoraproject Fedora.