What’s Vulnerable › Vulnerabilities

CVE-2016-2109

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 29.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-05-05 · updated 2026-06-17
• Weakness: CWE-399

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.

Affected products

• OpenSSL: through 1.0.1s; 1.0.2, 1.0.2-beta1, 1.0.2-beta2, 1.0.2-beta3, 1.0.2a, 1.0.2b (+5)
• RedHat Enterprise Linux Desktop: 7.0, 6.0
• RedHat Enterprise Linux Hpc Node: 7.0, 6.0
• RedHat Enterprise Linux Hpc Node Eus: 7.2
• RedHat Enterprise Linux Server: 7.0, 6.0
• RedHat Enterprise Linux Server Aus: 7.2
• RedHat Enterprise Linux Server Eus: 7.2
• RedHat Enterprise Linux Workstation: 7.0, 6.0

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

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