Remote code execution in GNU binutils

1) Out-of-bounds write

EUVDB-ID: #VU59295

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3549

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in the objdump utility. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger an out-of-bounds write by passing a large section to avr_elf32_load_records_from_section() function and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Binutils: 2.7 - 2.36.1

CPE2.3

• cpe:2.3:a:gnu:binutils:2.7:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:binutils:2.8:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:binutils:2.8.1:*:*:*:*:*:*:*

External links

https://bugzilla.redhat.com/show_bug.cgi?id=1960717

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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