NullSoft WinAmp up to 5.63 ml_local.dll memory corruption

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in NullSoft WinAmp up to 5.63. It has been rated as critical. Affected by this vulnerability is an unknown functionality in the library ml_local.dll. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2013-4694. Local access is required to approach this attack. Moreover, an exploit is present. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in NullSoft WinAmp up to 5.63 (Multimedia Player Software). This issue affects an unknown function in the library ml_local.dll. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in gen_jumpex.dll in Winamp before 5.64 Build 3418 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a package with a long Skin directory name. NOTE: a second buffer overflow involving a long GUI Search field to ml_local.dll was also reported. However, since it is only exploitable by the user of the application, this issue would not cross privilege boundaries unless Winamp is running under a highly restricted environment such as a kiosk.

The bug was discovered 06/05/2013. The weakness was disclosed 07/01/2013 by Julien Ahrens with Inshell Security as confirmed mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. The public release has been coordinated in cooperation with NullSoft. The identification of this vulnerability is CVE-2013-4694 since 06/26/2013. The exploitation is known to be difficult. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by Julien Ahrens and been published 1 days after the advisory. The exploit is available at inshell.net. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 67207 (Winamp < 5.64 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121304 (Winamp Multiple Memory Corruption Vulnerabilities).

Upgrading to version 5.64 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (85399), Exploit-DB (26558), Tenable (67207), SecurityFocus (BID 60883†) and OSVDB (94739†). The entries VDB-9318, VDB-9319 and VDB-147816 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Multimedia Player Software

Vendor

• NullSoft

Name

• WinAmp

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19
• 5.20
• 5.21
• 5.22
• 5.23
• 5.24
• 5.25
• 5.26
• 5.27
• 5.28
• 5.29
• 5.30
• 5.31
• 5.32
• 5.33
• 5.34
• 5.35
• 5.36
• 5.37
• 5.38
• 5.39
• 5.40
• 5.41
• 5.42
• 5.43
• 5.44
• 5.45
• 5.46
• 5.47
• 5.48
• 5.49
• 5.50
• 5.51
• 5.52
• 5.53
• 5.54
• 5.55
• 5.56
• 5.57
• 5.58
• 5.59
• 5.60
• 5.61
• 5.62
• 5.63

License

• free

Support

• end of life

Website

• Vendor: http://www.nullsoft.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Julien Ahrens
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 67207
Nessus Name: Winamp < 5.64 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 840482
OpenVAS Name: Winamp Libraries Multiple Buffer Overflow Vulnerability - Sep14
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: WinAmp 5.64

Timelineinfo

06/05/2013 🔍
06/19/2013 +14 days 🔍
06/26/2013 +7 days 🔍
07/01/2013 +5 days 🔍
07/01/2013 +0 days 🔍
07/02/2013 +1 days 🔍
07/04/2013 +2 days 🔍
07/09/2013 +5 days 🔍
04/16/2014 +281 days 🔍
04/17/2014 +1 days 🔍
05/11/2026 +4407 days 🔍

Sourcesinfo

Vendor: nullsoft.com

Advisory: seclists.org
Researcher: Julien Ahrens
Organization: Inshell Security
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-4694 (🔍)
GCVE (CVE): GCVE-0-2013-4694
GCVE (VulDB): GCVE-100-9317

OVAL: 🔍

X-Force: 85399
SecurityFocus: 60883 - Winamp CVE-2013-4694 Multiple Stack Buffer Overflow Vulnerabilities
OSVDB: 94739
SecurityTracker: 1030107 - Winamp Buffer Overflow and Pointer Dereference Bugs Let Remote Users Execute Arbitrary Code

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 07/04/2013 11:41
Updated: 05/11/2026 05:13
Changes: 07/04/2013 11:41 (73), 04/21/2019 20:40 (10), 05/17/2021 14:35 (7), 05/17/2021 14:37 (1), 06/01/2025 13:37 (14), 05/11/2026 05:13 (2)
Complete: 🔍
Committer:
Cache ID: 216::103

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Discussion

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