VDB-96996 · CVE-2016-8676 · BID 93468

libav 11.9 MP3 File get_vlc2 null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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-$5k0.00

Summaryinfo

A vulnerability was found in libav 11.9 and classified as problematic. This impacts the function get_vlc2 of the component MP3 File Handler. The manipulation results in null pointer dereference. This vulnerability is identified as CVE-2016-8676. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in libav 11.9 (Multimedia Player Software). Affected is the function get_vlc2 of the component MP3 File Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

The get_vlc2 function in get_bits.h in Libav 11.9 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted mp3 file. NOTE: this issue exists due to an incomplete fix for CVE-2016-8675.

The bug was discovered 10/15/2016. The weakness was released 02/15/2017 by Agostino Sarubbo with Gentoo (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2016-8676 since 10/15/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 123 days. During that time the estimated underground price was around $0-$5k.

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 93468†). Entry connected to this vulnerability is available at VDB-96995. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Name

Version

License

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

AVACAuCIA
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/08/2016 🔍
10/15/2016 +7 days 🔍
10/15/2016 +0 days 🔍
02/15/2017 +123 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-2016-8676 (🔍)
GCVE (CVE): GCVE-0-2016-8676
GCVE (VulDB): GCVE-100-96996
SecurityFocus: 93468 - Libav 'get_vlc2()' Function NULL Pointer Dereference Denial of Service Vulnerability
OSVDB: - CVE-2016-8676 - Libav - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 02/16/2017 08:58
Updated: 08/15/2020 08:04
Changes: 02/16/2017 08:58 (60), 08/15/2020 08:04 (6)
Complete: 🔍
Cache ID: 216:DE6:103

Once again VulDB remains the best source for vulnerability data.

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