CVE-2016-4544
CVE-2016-4544 is a critical-severity vulnerability in Debian Debian Linux with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 7% (93rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Debian Debian Linux
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2016-4544?
- CVE-2016-4544 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2016-4544 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-4544?
- CVE-2016-4544 primarily affects Debian Debian Linux. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2016-4544?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2016-4544 published?
- CVE-2016-4544 was published on 2016-05-22 and last updated on 2026-06-17.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3602
- http://www.openwall.com/lists/oss-security/2016/05/05/21
- http://www.securityfocus.com/bid/89844
- https://bugs.php.net/bug.php?id=72094
- https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=082aecfc3a753ad03be82cf14f03ac065723ec92
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- https://security.gentoo.org/glsa/201611-22
Affected products (5)
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
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Threat intelligence
Threat-intel indicators referencing this CVE:
- 183.182.99.92 (ipv4-addr)
- 103.153.190.105 (ipv4-addr)
- 188.44.20.32 (ipv4-addr)
- 198.199.94.79 (ipv4-addr)
- 122.3.106.113 (ipv4-addr)