What is CVE-2016-4544?

CVE-2016-4544 is a critical-severity vulnerability in Php, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-05-22.

How severe is CVE-2016-4544?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2016-4544 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Php

CVE-2016-4544

The exif_process_TIFF_in_JPEG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 does not validate TIFF start data, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via crafted header data.

Vulnerability class: Buffer Overflow

EPSS: 0.067 (93.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Php
Debian Debian_linux — versions 8.0
Fedoraproject Fedora — versions 24
Opensuse Leap — versions 42.1
Opensuse — versions 13.2
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

security@debian.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
security@debian.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
security@debian.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
security@debian.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
security@debian.org (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
security@debian.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
security@debian.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
security@debian.org (x_refsource_CONFIRM, Exploit, Issue Tracking, Vendor Advisory)
security@debian.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
security@debian.org (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2016-4544?: CVE-2016-4544 is a critical-severity vulnerability in Php, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-05-22.
How severe is CVE-2016-4544?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-4544 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.