Summaryinfo

A vulnerability labeled as critical has been found in libgig 4.0.0. This affects the function gig::DimensionRegion::CreateVelocityTable of the file gig.cpp of the component gig File Handler. The manipulation as part of Application results in memory corruption. This vulnerability is reported as CVE-2017-12951. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability classified as critical has been found in libgig 4.0.0 (Software Library). Affected is the function gig::DimensionRegion::CreateVelocityTable of the file gig.cpp of the component gig File Handler. The manipulation as part of a Application 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. CVE summarizes:

The gig::DimensionRegion::CreateVelocityTable function in gig.cpp in libgig 4.0.0 allows remote attackers to cause a denial of service (stack-based buffer over-read and application crash) via a crafted gig file.

The bug was discovered 08/23/2017. The weakness was disclosed 08/28/2017 as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. This vulnerability is traded as CVE-2017-12951 since 08/18/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. 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 5 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 Exploit-DB (42546). The entries VDB-105821, VDB-105823, VDB-105824 and VDB-105825 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Software Library

Name

• libgig

Version

• 4.0.0

License

• free

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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