CVE-2015-7687
critical
CVSS v3
9.8
CVSS v2
7.5
VIR risk
9.8
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.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-7687
Vendor advisory: cve@mitre.org — https://www.opensmtpd.org/announces/release-5.7.2.txt
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 5.7.3p1-1 |
| debian | bullseye | fixed | 5.7.3p1-1 |
| debian | forky | fixed | 5.7.3p1-1 |
| debian | sid | fixed | 5.7.3p1-1 |
| debian | trixie | fixed | 5.7.3p1-1 |
| fedora | 22 | affected | |
| fedora | 23 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openbsd | opensmtpd | {"endIncluding":"5.7.1"} | |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html
- http://www.openwall.com/lists/oss-security/2015/10/03/1
- http://www.securityfocus.com/bid/76975
- https://bugzilla.redhat.com/show_bug.cgi?id=1268793
- https://www.opensmtpd.org/announces/release-5.7.2.txt
- https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt
- https://security-tracker.debian.org/tracker/CVE-2015-7687
CWEs
CWE-416
Verify integrity in audit chain (admin only). AS-IS.