Critical
Security advisory
OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-2177
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:53 UTC · Revision 1
Source evidence
OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.
osv:CVE-2016-2177
Complete source record
{
"id": "7b6ff1832cab725925ac7d6f7f48a1a71d45c0e3fa9288316981b2267f21fd95",
"url": "https://osv.dev/vulnerability/CVE-2016-2177",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-2177",
"summary": "OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.",
"evidence": "osv:CVE-2016-2177",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2016-2177",
"aliases": [
"CVE-2016-2177"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openssl/openssl",
"type": "GIT",
"events": [
{
"introduced": "888759a1d38197f29de7227876c3b58fbff8549f"
},
{
"last_affected": "e818b74be2170fbe957a07b0da4401c2b694b3b8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1"
},
{
"last_affected": "1.0.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1a"
},
{
"last_affected": "1.0.1a"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1b"
},
{
"last_affected": "1.0.1b"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1c"
},
{
"last_affected": "1.0.1c"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1d"
},
{
"last_affected": "1.0.1d"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1e:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1e"
},
{
"last_affected": "1.0.1e"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1f:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1f"
},
{
"last_affected": "1.0.1f"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1g:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1g"
},
{
"last_affected": "1.0.1g"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1h:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1h"
},
{
"last_affected": "1.0.1h"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1i:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1i"
},
{
"last_affected": "1.0.1i"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1j:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1j"
},
{
"last_affected": "1.0.1j"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1k:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1k"
},
{
"last_affected": "1.0.1k"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1l:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1l"
},
{
"last_affected": "1.0.1l"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1m:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1m"
},
{
"last_affected": "1.0.1m"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1n"
},
{
"last_affected": "1.0.1n"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1o"
},
{
"last_affected": "1.0.1o"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1p:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1p"
},
{
"last_affected": "1.0.1p"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1q:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1q"
},
{
"last_affected": "1.0.1q"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1r:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1r"
},
{
"last_affected": "1.0.1r"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1s:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1s"
},
{
"last_affected": "1.0.1s"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.0.1t:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.1t"
},
{
"last_affected": "1.0.1t"
}
],
"source": "CPE_STRING"
},
{
"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:1.0.2h:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.2h"
},
{
"last_affected": "1.0.2h"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.0.1",
"1.0.2"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2177.json"
}
}
],
"modified": "2026-10-24T10:30:59.980012676Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
"https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=a004e72b95835136d3f1ea90517f706c24c03da7",
"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05302448",
"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03763en_us",
"https://kc.mcafee.com/corporate/index?page=content&id=SB10215",
"https://support.f5.com/csp/article/K23873366",
"https://support.hpe.com/hpsc/doc/public/display?docLocale=en&docId=emr_na-hpesbhf03856en_us",
"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us",
"https://www.citect.schneider-electric.com/safety-and-security-central/36-security-notifications/9134-vulnerabilities-within-schneider-electric-floating-license-manager",
"https://www.schneider-electric.com/en/download/document/SEVD-2018-137-01/",
"https://www.schneider-electric.com/en/download/document/SEVD-2018-144-01/",
"https://www.tenable.com/security/tns-2016-20",
"https://www.tenable.com/security/tns-2016-21",
"https://access.redhat.com/errata/RHSA-2017:0193",
"https://access.redhat.com/errata/RHSA-2017:0194",
"https://access.redhat.com/errata/RHSA-2017:1658",
"https://bto.bluecoat.com/security-advisory/sa132",
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05302448",
"https://ics-cert.us-cert.gov/advisories/ICSA-18-144-01",
"https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312",
"https://kc.mcafee.com/corporate/index?page=content&id=SB10165",
"https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc",
"https://www.arista.com/en/support/advisories-notices/security-advisories/1749-security-advisory-24",
"https://www.tenable.com/security/tns-2016-16",
"https://bugzilla.redhat.com/show_bug.cgi?id=1341705",
"https://security.gentoo.org/glsa/201612-16"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:hp:icewall_mcrp:3.0:*:*:*:*:*:*:*"
],
"vendor_product": "hp:icewall_mcrp",
"extracted_events": [
{
"range": [
{
"introduced": "3.0"
},
{
"last_affected": "3.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:hp:icewall_sso:10.0:*:*:*:certd:*:*:*",
"cpe:2.3:a:hp:icewall_sso:10.0:*:*:*:dfw:*:*:*"
],
"vendor_product": "hp:icewall_sso",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:hp:icewall_sso_agent_option:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "hp:icewall_sso_agent_option",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:oracle:linux:5:*:*:*:*:*:*:*",
"cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*",
"cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:linux",
"extracted_events": [
{
"range": [
{
"introduced": "5"
},
{
"last_affected": "5"
},
{
"introduced": "6"
},
{
"last_affected": "6"
},
{
"introduced": "7"
},
{
"last_affected": "7"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*",
"cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:solaris",
"extracted_events": [
{
"range": [
{
"introduced": "10"
},
{
"last_affected": "10"
},
{
"introduced": "11.3"
},
{
"last_affected": "11.3"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-2177",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439434,
"published_at": "2016-06-20T01:59:02.087+00:00"
}