Home/CVE/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
CVE

CVE-2016-4343

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

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.

HIGH · CVSS 8.8 EPSS 0.07576
Act now
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-824Access of Uninitialized Pointer
▤

Affected Products & Versions

4
php< 5.5.36
php>= 5.6.0 and < 5.6.18
php>= 7.0.0 and < 7.0.3
opensuseall versions
⚠

Public Exploits & PoCs

1
pocbugs.php.net · bug.php?id=71331bugs.php.net
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 May 2016 · 01:59 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

2
rhsaRHSA-2016:2750Moderate
usnUSN-2984-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.htmlMailing ListThird Party Advisory
http://php.net/ChangeLog-5.phpRelease NotesVendor Advisory
http://php.net/ChangeLog-7.phpRelease NotesVendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/28/2Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/89179Third Party AdvisoryVDB Entry
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