High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-2109
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:08 UTC · Revision 1
Source evidence
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.
osv:CVE-2016-2109
Complete source record
{
"id": "d0eafeb6105c089d785baed3aca15d1f7bc95835eebb5eaa7b895f0509973220",
"url": "https://osv.dev/vulnerability/CVE-2016-2109",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-2109",
"summary": "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.",
"evidence": "osv:CVE-2016-2109",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-2109",
"aliases": [
"CVE-2016-2109"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openssl/openssl",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "888759a1d38197f29de7227876c3b58fbff8549f"
},
{
"introduced": "e818b74be2170fbe957a07b0da4401c2b694b3b8"
},
{
"last_affected": "2c5db8dac3a06fe5b2c889838a606138ee3542ed"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "1.0.1s"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2"
},
{
"last_affected": "1.0.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2a"
},
{
"last_affected": "1.0.2a"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2b"
},
{
"last_affected": "1.0.2b"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2c"
},
{
"last_affected": "1.0.2c"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2d"
},
{
"last_affected": "1.0.2d"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2e"
},
{
"last_affected": "1.0.2e"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2f"
},
{
"last_affected": "1.0.2f"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2g"
},
{
"last_affected": "1.0.2g"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2-beta1"
},
{
"last_affected": "1.0.2-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2-beta2"
},
{
"last_affected": "1.0.2-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2-beta3"
},
{
"last_affected": "1.0.2-beta3"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.0.2",
"1.0.2-beta1",
"1.0.2-beta2",
"1.0.2-beta3",
"OpenSSL_1_0_1u",
"OpenSSL_1_0_1t",
"OpenSSL_1_0_1s",
"OpenSSL_1_0_1r",
"OpenSSL_1_0_1q",
"OpenSSL_1_0_1p",
"OpenSSL_1_0_1o",
"OpenSSL_1_0_1n",
"OpenSSL_1_0_1m",
"OpenSSL_1_0_1-post-reformat",
"OpenSSL_1_0_1-post-auto-reformat",
"OpenSSL_1_0_1-pre-auto-reformat",
"OpenSSL_1_0_1-pre-reformat",
"OpenSSL_1_0_1l",
"OpenSSL_1_0_1k",
"OpenSSL_1_0_1j",
"OpenSSL_1_0_2-beta3",
"OpenSSL_1_0_1i",
"OpenSSL_1_0_2-beta2",
"OpenSSL_1_0_1h",
"OpenSSL_1_0_1g",
"OpenSSL_1_0_2-beta1",
"OpenSSL_1_0_1f",
"OpenSSL_1_0_1e",
"OpenSSL_1_0_1d",
"OpenSSL_1_0_1c",
"OpenSSL_1_0_1b",
"OpenSSL_1_0_1a",
"OpenSSL_1_0_1",
"OpenSSL_1_0_1-beta3",
"OpenSSL_1_0_1-beta2",
"OpenSSL_1_0_1-beta1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2109.json"
}
}
],
"modified": "2026-10-24T10:31:03.411802323Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
"https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=c62981390d6cf9e3d612c489b8b77c2913b25807",
"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03756en_us",
"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03765en_us",
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149",
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722",
"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40202",
"https://kc.mcafee.com/corporate/index?page=content&id=SB10160",
"https://source.android.com/security/bulletin/2017-07-01",
"https://support.apple.com/HT206903",
"https://www.tenable.com/security/tns-2016-18",
"https://bto.bluecoat.com/security-advisory/sa123",
"https://security.gentoo.org/glsa/201612-16",
"https://security.netapp.com/advisory/ntap-20160504-0001/",
"https://www.freebsd.org/security/advisories/FreeBSD-SA-16:17.openssl.asc",
"https://www.openssl.org/news/secadv/20160503.txt"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_hpc_node",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
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},
{
"last_affected": "6.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.2:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_hpc_node_eus",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_eus",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-2109",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 440248,
"published_at": "2016-05-05T01:59:05.357+00:00"
}