CVE-2015-1789
The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 75.7%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 75.72% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- openssl/openssl · oracle/sparc-opl service processor
- Source
- secalert@redhat.com
EPSS moved from 71.6% on 21 September 2026 to 75.7% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10733
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html
- http://marc.info/?l=bugtraq&m=143654156615516&w=2
- http://marc.info/?l=bugtraq&m=143880121627664&w=2
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
- http://rhn.redhat.com/errata/RHSA-2015-1115.html
- http://rhn.redhat.com/errata/RHSA-2015-1197.html
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl
- http://www.debian.org/security/2015/dsa-3287
- http://www.fortiguard.com/advisory/2015-06-11-fortinet-vulnerability-openssl-vulnerabilities-june-2015
- http://www.fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.