PHP up to 5.5.34/5.6.20/7.0.5 ext/exif/exif.c exif_process_TIFF_in_JPEG memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in PHP up to 5.5.34/5.6.20/7.0.5. Affected is the function exif_process_TIFF_in_JPEG of the file ext/exif/exif.c. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2016-4544. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in PHP up to 5.5.34/5.6.20/7.0.5 (Programming Language Software) and classified as very critical. This vulnerability affects the function exif_process_TIFF_in_JPEG of the file ext/exif/exif.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was disclosed 05/22/2016 by Hanno Boeck as confirmed git commit (GIT Repository). The advisory is shared for download at git.php.net. This vulnerability was named CVE-2016-4544 since 05/05/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD (estimation calculated on 08/22/2022).

The vulnerability scanner Nessus provides a plugin with the ID 91397 (Debian DLA-499-1 : php5 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11623 (PHP Versions Prior to 5.6.21/5.5.35 Multiple Vulnerabilities).

Upgrading to version 5.5.35, 5.6.21 or 7.0.6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.php.net. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91397) and SecurityFocus (BID 89844†). The entries VDB-67396, VDB-67398, VDB-67420 and VDB-67724 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91397
Nessus Name: Debian DLA-499-1 : php5 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63997
OpenVAS Name: Ubuntu Update for php7.0 USN-2984-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 5.5.35/5.6.21/7.0.6
Patch: 082aecfc3a753ad03be82cf14f03ac065723ec92

Timelineinfo

04/27/2016 🔍
05/05/2016 +8 days 🔍
05/21/2016 +16 days 🔍
05/22/2016 +1 days 🔍
05/23/2016 +1 days 🔍
05/31/2016 +8 days 🔍
06/01/2016 +1 days 🔍
08/22/2022 +2273 days 🔍

Sourcesinfo

Product: php.org

Advisory: 72094
Researcher: Hanno Boeck
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4544 (🔍)
GCVE (CVE): GCVE-0-2016-4544
GCVE (VulDB): GCVE-100-87592

OVAL: 🔍

SecurityFocus: 89844 - PHP 'ext/exif/exif.c' Multiple Heap Based Buffer Overflow Vulnerabilities

See also: 🔍

Entryinfo

Created: 05/23/2016 10:34
Updated: 08/22/2022 08:05
Changes: 05/23/2016 10:34 (71), 03/10/2019 08:18 (14), 08/22/2022 07:58 (4), 08/22/2022 08:05 (1)
Complete: 🔍
Cache ID: 216::103

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