#VU79353 Input validation error in Binutils - CVE-2020-35493

Vulnerability identifier: #VU79353

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-35493

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Binutils
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a local attacker to perform a denial of service attack.

The vulnerability exists in bfd/pef.c. A local attacker can send a specially crafted PEF file and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Binutils: before 2.34

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1911437
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4KOK3QWSVOUJWJ54HVGIFWNLWQ5ZY4S6/
https://security.netapp.com/advisory/ntap-20210212-0007/
https://security.gentoo.org/glsa/202107-24

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.