CVE-2015-7687
published 2017-10-16CVE-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…
PriorityP350critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
4.09%
89.6th percentile
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | opensmtpd | < opensmtpd 5.7.3p1-1 (bookworm) | opensmtpd 5.7.3p1-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| openbsd | opensmtpd | <= 5.7.1 | — |
| opensmtpd | opensmtpd | >= 0 < 5.7.3p1-1 | 5.7.3p1-1 |
| opensmtpd | opensmtpd | >= 0 < 5.7.3p1-1 | 5.7.3p1-1 |
| opensmtpd | opensmtpd | >= 0 < 5.7.3p1-1 | 5.7.3p1-1 |
| opensmtpd | opensmtpd | >= 0 < 5.7.3p1-1 | 5.7.3p1-1 |
CVSS provenance
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8CRITICAL
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Debian
CVE-2015-7687: opensmtpd - Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers t...
vendor_debian·2015·CVSS 9.8
CVE-2015-7687 [CRITICAL] CVE-2015-7687: opensmtpd - Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers t...
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.
Scope: local
bookworm: resolved (fixed in 5.7.3p1-1)
bullseye: resolved (fixed in 5.7.3p1-1)
forky: resolved (fixed in 5.7.3p1-1)
sid: resolved (fixed in 5.7.3p1-1)
trixie: resolved (fixed in 5.7.3p1-1)
GHSA
GHSA-hmqq-mf9r-frq9: Use-after-free vulnerability in OpenSMTPD before 5
ghsa_unreviewed·2022-05-17
CVE-2015-7687 [CRITICAL] CWE-416 GHSA-hmqq-mf9r-frq9: Use-after-free vulnerability in OpenSMTPD before 5
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.
OSV
CVE-2015-7687: Use-after-free vulnerability in OpenSMTPD before 5
osv·2017-10-16·CVSS 9.8
CVE-2015-7687 [CRITICAL] CVE-2015-7687: Use-after-free vulnerability in OpenSMTPD before 5
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2
bugzilla·2015-10-05·CVSS 9.8
CVE-2015-7687 [CRITICAL] CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2
CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2
Several vulnerabilities have been fixed in OpenSMTPD 5.7.2:
- an oversight in the portable version of fgetln() that allows attackers to read and write out-of-bounds memory;
- multiple denial-of-service vulnerabilities that allow local users to kill or hang OpenSMTPD;
- a stack-based buffer overflow that allows local users to crash OpenSMTPD, or execute arbitrary code as the non-chrooted _smtpd user;
- a hardlink attack (or race-conditioned symlink attack) that allows local users to unset the chflags() of arbitrary files;
- a hardlink attack that allows local users to read the first line of arbitrary files (for example, root's hash from /etc/master.passwd);
- a denial-of-service vulnerability that allows remote attacker
Bugzilla
CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [fedora-all]
bugzilla·2015-10-05·CVSS 9.8
CVE-2015-7687 [CRITICAL] CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [fedora-all]
CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of
Bugzilla
CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [epel-all]
bugzilla·2015-10-05·CVSS 9.8
CVE-2015-7687 [CRITICAL] CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [epel-all]
CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora EPEL.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htmlhttp://www.openwall.com/lists/oss-security/2015/10/03/1http://www.securityfocus.com/bid/76975https://bugzilla.redhat.com/show_bug.cgi?id=1268793https://www.opensmtpd.org/announces/release-5.7.2.txthttps://www.qualys.com/2015/10/02/opensmtpd-audit-report.txthttp://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.htmlhttp://www.openwall.com/lists/oss-security/2015/10/03/1http://www.securityfocus.com/bid/76975https://bugzilla.redhat.com/show_bug.cgi?id=1268793https://www.opensmtpd.org/announces/release-5.7.2.txthttps://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt
2017-10-16
Published