Xiph.Org libao 1.2.0 MP3 File audio_out.c tokenize_matrix memory corruption

Summaryinfo

A vulnerability classified as critical has been found in Xiph.Org libao 1.2.0. This issue affects the function tokenize_matrix of the file audio_out.c of the component MP3 File Handler. Performing a manipulation results in memory corruption. This vulnerability is identified as CVE-2017-11548. The attack is only possible with local access. Additionally, an exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Xiph.Org libao 1.2.0. This affects the function tokenize_matrix of the file audio_out.c of the component MP3 File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The _tokenize_matrix function in audio_out.c in Xiph.Org libao 1.2.0 allows remote attackers to cause a denial of service (memory corruption) via a crafted MP3 file.

The bug was discovered 07/30/2017. The weakness was released 07/31/2017 (Website). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2017-11548 since 07/22/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 120571 (Fedora 28 : libao (2018-816b63ad38)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277487 (Fedora Security Update for libao (FEDORA-2018-816b63ad38)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (42400) and Tenable (120571). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Xiph.Org

Name

• libao

Version

• 1.2.0

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion