CVE-2016-2109
The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in the ASN.1 BIO implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to cause a denial of service (memory consumption) via a short invalid encoding.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 29.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in the ASN.1 BIO implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to cause a denial of service (memory consumption) via a short invalid encoding.
- 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
- 29.21% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- openssl/openssl · redhat/enterprise linux desktop · redhat/enterprise linux hpc node · redhat/enterprise linux hpc node eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
EPSS 29.2% since 4 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00013.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00055.html
- http://packetstormsecurity.com/files/136912/Slackware-Security-Advisory-openssl-Updates.html
- http://rhn.redhat.com/errata/RHSA-2016-0722.html
- http://rhn.redhat.com/errata/RHSA-2016-0996.html
- http://rhn.redhat.com/errata/RHSA-2016-2056.html
- http://rhn.redhat.com/errata/RHSA-2016-2073.html
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160504-openssl
- http://www.debian.org/security/2016/dsa-3566
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.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/cpujul2018-4258247.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.