Underbit libmad up to 0.15.1b decoder.c mad_decoder_run double free

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Underbit libmad up to 0.15.1b. This affects the function mad_decoder_run of the file decoder.c. Executing a manipulation can lead to double free. This vulnerability is tracked as CVE-2018-7263. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Underbit libmad up to 0.15.1b. It has been declared as critical. This vulnerability affects the function mad_decoder_run of the file decoder.c. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The mad_decoder_run() function in decoder.c in Underbit libmad through 0.15.1b allows remote attackers to cause a denial of service (SIGABRT because of double free or corruption) or possibly have unspecified other impact via a crafted file.

The bug was discovered 02/20/2018. The weakness was disclosed 02/20/2018 (Website). The advisory is shared for download at bugs.debian.org. This vulnerability was named CVE-2018-7263 since 02/20/2018. 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 vulnerability scanner Nessus provides a plugin with the ID 261391 (Linux Distros Unpatched Vulnerability : CVE-2018-7263), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277574 (Fedora Security Update for libmadb (FEDORA-2018-4f9f4d26f0)).

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 Tenable (261391). The entries VDB-100770, VDB-100771, VDB-100772 and VDB-104724 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
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: Double free
CWE: CWE-415 / 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: 261391
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2018-7263

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/20/2018 🔍
02/20/2018 +0 days 🔍
02/20/2018 +0 days 🔍
02/20/2018 +0 days 🔍
02/21/2018 +1 days 🔍
09/08/2025 +2756 days 🔍

Sourcesinfo

Advisory: bugs.debian.org
Status: Confirmed

CVE: CVE-2018-7263 (🔍)
GCVE (CVE): GCVE-0-2018-7263
GCVE (VulDB): GCVE-100-113632
See also: 🔍

Entryinfo

Created: 02/21/2018 07:58
Updated: 09/08/2025 06:00
Changes: 02/21/2018 07:58 (60), 01/07/2020 11:35 (4), 09/08/2025 06:00 (17)
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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