GNU libiberty simple-object-elf.c simple_object_elf_match shstrndx integer overflow

Summaryinfo

A vulnerability was found in GNU libiberty. It has been declared as critical. This affects the function simple_object_elf_match of the file simple-object-elf.c. Such manipulation of the argument shstrndx leads to integer overflow. This vulnerability is documented as CVE-2019-14250. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability was found in GNU libiberty (version now known). It has been rated as critical. Affected by this issue is the function simple_object_elf_match of the file simple-object-elf.c. The manipulation of the argument shstrndx with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in GNU libiberty, as distributed in GNU Binutils 2.32. simple_object_elf_match in simple-object-elf.c does not check for a zero shstrndx value, leading to an integer overflow and resultant heap-based buffer overflow.

The weakness was released 07/24/2019 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2019-14250 since 07/23/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236727 (Alibaba Cloud Linux 3 : 0120: binutils (ALINUX3-SA-2022:0120)), which helps to determine the existence of the flaw in a target environment.

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 (236727). Entry connected to this vulnerability is available at VDB-139026. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• GNU

Name

• libiberty

License

• open-source

Website

• Vendor: https://www.gnu.org/

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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