Ubuntu update for binutils

1) Out-of-bounds write

EUVDB-ID: #VU59293

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-2021-45078

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

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

Note, the vulnerability exists due to incorrect patch for #VU13471 (CVE-2018-12699).

Mitigation

Update the affected package binutils to the latest version.

Vulnerable software versions

Ubuntu: 20.04

binutils (Ubuntu package): before 2.34-6ubuntu1.6

binutils-multiarch (Ubuntu package): before 2.34-6ubuntu1.6

CPE2.3

• cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:binutils_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:binutils-multiarch_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-6160-1

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.