libav 11.7 MP3 File rnd_template.c ff_put_pixels8_xy2_mmx null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in libav 11.7. Impacted is the function ff_put_pixels8_xy2_mmx of the file rnd_template.c of the component MP3 File Handler. Such manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2016-7477. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in libav 11.7 (Multimedia Player Software). It has been rated as problematic. Affected by this issue is the function ff_put_pixels8_xy2_mmx of the file rnd_template.c of the component MP3 File Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

The ff_put_pixels8_xy2_mmx function in rnd_template.c in Libav 11.7 allows remote attackers to cause a denial of service (invalid memory access and crash) via a crafted mp3 file. NOTE: this issue was originally reported as involving a NULL pointer dereference.

The bug was discovered 02/15/2017. The weakness was disclosed 02/15/2017 by Agostino Sarubbo with Gentoo (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-7477 since 09/09/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 93042†). The entries VDB-96996, VDB-96995, VDB-96993 and VDB-96991 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Multimedia Player Software

Name

• libav

Version

• 11.7

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/09/2016 🔍
09/20/2016 +11 days 🔍
02/15/2017 +148 days 🔍
02/15/2017 +0 days 🔍
02/15/2017 +0 days 🔍
02/16/2017 +1 days 🔍
08/15/2020 +1276 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Agostino Sarubbo
Organization: Gentoo
Status: Not defined

CVE: CVE-2016-7477 (🔍)
GCVE (CVE): GCVE-0-2016-7477
GCVE (VulDB): GCVE-100-96992
SecurityFocus: 93042 - Libav 'ff_put_pixels8_xy2_mmx()' Function NULL Pointer Dereference Denial of Service Vulnerability
OSVDB: - CVE-2016-7477 - LIbav - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 02/16/2017 08:57
Updated: 08/15/2020 07:15
Changes: 02/16/2017 08:57 (60), 08/15/2020 07:15 (6)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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