GNU binutils 2.31 BFD Library opncls.c bfd_zalloc memory corruption

Summaryinfo

A vulnerability classified as problematic was found in GNU binutils 2.31. Impacted is the function bfd_zalloc of the file opncls.c of the component BFD Library. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2018-17359. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability was found in GNU binutils 2.31 (Programming Tool Software). It has been classified as problematic. Affected is the function bfd_zalloc of the file opncls.c of the component BFD Library. 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 availability. CVE summarizes:

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31. An invalid memory access exists in bfd_zalloc in opncls.c. Attackers could leverage this vulnerability to cause a denial of service (application crash) via a crafted ELF file.

The bug was discovered 09/20/2018. The weakness was shared 09/23/2018 (Website). The advisory is shared for download at sourceware.org. This vulnerability is traded as CVE-2018-17359 since 09/23/2018. 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. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 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 entry VDB-124403 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Programming Tool Software

Vendor

• GNU

Name

• binutils

Version

• 2.31

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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