VulnerabilityModified
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.
CRITICAL 9.8EPSS 4.09%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.09% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- openbsd/opensmtpd · fedoraproject/fedora
- Source
- cve@mitre.org
References
- 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 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://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 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.