High
Security advisory
The phar_make_dirstream function in ext/phar/dirstream.c in PHP before 5.6.18 and 7.x before 7.0.3 mishandles zero-size ././@LongLink files, which allows remote attackers to cause a denial of service (uninitialized pointer dereference) or possibly have unspecified other impact via a crafted TAR archive.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-4343
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:18 UTC · Revision 1
Source evidence
The phar_make_dirstream function in ext/phar/dirstream.c in PHP before 5.6.18 and 7.x before 7.0.3 mishandles zero-size ././@LongLink files, which allows remote attackers to cause a denial of service (uninitialized pointer dereference) or possibly have unspecified other impact via a crafted TAR archive.
osv:CVE-2016-4343
Complete source record
{
"id": "9269985d4c8b999d6cff5e6f1af21b4879c3154b1c645275b11cebcb7daff5ed",
"url": "https://osv.dev/vulnerability/CVE-2016-4343",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-4343",
"summary": "The phar_make_dirstream function in ext/phar/dirstream.c in PHP before 5.6.18 and 7.x before 7.0.3 mishandles zero-size ././@LongLink files, which allows remote attackers to cause a denial of service (uninitialized pointer dereference) or possibly have unspecified other impact via a crafted TAR archive.",
"evidence": "osv:CVE-2016-4343",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-4343",
"aliases": [
"CVE-2016-4343"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/php/php-src",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "527e8e73c97e282b1efde24cfb95dc0942e0ad59"
},
{
"introduced": "fc1df8e7a6886e29a6ed5bef3f674ac61164e847"
},
{
"fixed": "62cf13d3aa08b15107b02a0505a4f30142fa37b4"
},
{
"introduced": "60fffd296abce5fc071f3c173c25a2696cf683c6"
},
{
"fixed": "4e1b8701573698f56e12672e4991d7e6239138d2"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "5.5.36"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0"
},
{
"fixed": "5.6.18"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"POST_PHP7_NSAPI_REMOVAL",
"PRE_PHP7_NSAPI_REMOVAL",
"PRE_PHP7_EREG_MYSQL_REMOVALS",
"PRE_PHP7_REMOVALS",
"POST_PHP7_REMOVALS",
"POST_AST_MERGE",
"PRE_AST_MERGE",
"POST_64BIT_BRANCH_MERGE",
"PRE_64BIT_BRANCH_MERGE",
"POST_PHPNG_MERGE"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-4343.json",
"vanir_signatures": [
{
"id": "CVE-2016-4343-1be520b7",
"digest": {
"length": 231,
"function_hash": "295037734266504677848102670698206975725"
},
"source": "https://github.com/php/php-src/commit/4e1b8701573698f56e12672e4991d7e6239138d2",
"target": {
"file": "ext/standard/exec.c",
"function": "PHP_MINIT_FUNCTION"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2016-4343-998c6db5",
"digest": {
"threshold": 0.9,
"line_hashes": [
"47536493921292488180503894855773419194",
"114465696917561743629200732476751433886",
"328867887628948915816274583623244400274",
"297376920111133995317562874093014086385",
"168934627128843040351700635521553019231",
"258560438346906560143303805605521795951",
"2153196558742618628732246770820228434"
]
},
"source": "https://github.com/php/php-src/commit/4e1b8701573698f56e12672e4991d7e6239138d2",
"target": {
"file": "ext/standard/exec.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:12:07Z"
}
}
],
"modified": "2026-10-24T14:12:07.797149521Z",
"provider": "osv",
"references": [
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731",
"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://bugs.php.net/bug.php?id=71331"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:opensuse",
"extracted_events": [
{
"range": [
{
"introduced": "13.2"
},
{
"last_affected": "13.2"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-4343",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443328,
"published_at": "2016-05-22T01:59:17.477+00:00"
}