CVE-2016-2109
UnknownEPSS 29.21%
Last modified
CVE-2016-2109 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 29.21% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | <= 1.0.1s |
| Openssl | Openssl | 1.0.2 |
| Openssl | Openssl | 1.0.2a |
| Openssl | Openssl | 1.0.2b |
| Openssl | Openssl | 1.0.2c |
| Openssl | Openssl | 1.0.2d |
| Openssl | Openssl | 1.0.2e |
| Openssl | Openssl | 1.0.2f |
| Openssl | Openssl | 1.0.2g |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Hpc Node | 7.0 |
| Redhat | Enterprise Linux Hpc Node Eus | 7.2 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.2 |
| Redhat | Enterprise Linux Server Eus | 7.2 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Hpc Node | 6.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Workstation | 6.0 |
References
- https://www.openssl.org/news/secadv/20160503.txtVendor Advisory
- https://www.openssl.org/news/secadv/20160503.txtVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2016-2109?
Severity scoring for CVE-2016-2109 is pending analysis. The EPSS model estimates a 29.21% probability of exploitation in the next 30 days.
How do I fix CVE-2016-2109?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2016-2109?
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