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Vulnerability record · CVE-2017-3735 · published 28 August 2017

CVE-2017-3735: Openssl memory buffer overflow vulnerability

OOpenssl · Openssl

While parsing an IPAddressFamily extension in an X.509 certificate, it is possible to do a one-byte overread. This would result in an incorrect text display of the certificate. This bug has been present since 2006 and is present in all versions of OpenSSL before 1.0.2m and 1.1.0g.

5.3 CVSS 3.0 Medium EPSS 21% · top 2.5% CWE-119 · Memory buffer overflow
5.3CVSS 3.0 base score, v2 5.0
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
54References
17 Jun 2026Last modified by NVD

Description

While parsing an IPAddressFamily extension in an X.509 certificate, it is possible to do a one-byte overread. This would result in an incorrect text display of the certificate. This bug has been present since 2006 and is present in all versions of OpenSSL before 1.0.2m and 1.1.0g.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/100515 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039726 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3221
https://access.redhat.com/errata/RHSA-2018:3505
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://github.com/openssl/openssl/commit/068b963bb7afc57f5bdd723de0dd15e7795d5822
https://lists.debian.org/debian-lts-announce/2017/11/msg00011.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc
https://security.gentoo.org/glsa/201712-03
https://security.netapp.com/advisory/ntap-20170927-0001/ Issue TrackingThird Party Advisory
https://security.netapp.com/advisory/ntap-20171107-0002/ Issue TrackingThird Party Advisory
https://support.apple.com/HT208331
https://usn.ubuntu.com/3611-2/
https://www.debian.org/security/2017/dsa-4017 Third Party Advisory
https://www.debian.org/security/2017/dsa-4018 Third Party Advisory
https://www.openssl.org/news/secadv/20170828.txt PatchVendor Advisory
https://www.openssl.org/news/secadv/20171102.txt Issue TrackingVendor Advisory
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.tenable.com/security/tns-2017-14 Issue TrackingThird Party Advisory
https://www.tenable.com/security/tns-2017-15
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/100515 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039726 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3221
https://access.redhat.com/errata/RHSA-2018:3505
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://github.com/openssl/openssl/commit/068b963bb7afc57f5bdd723de0dd15e7795d5822
https://lists.debian.org/debian-lts-announce/2017/11/msg00011.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc
https://security.gentoo.org/glsa/201712-03

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Source: NIST National Vulnerability Database (record CVE-2017-3735), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.