Remote code execution in GNU C Library (glibc)

1) Out-of-bounds write

EUVDB-ID: #VU72124

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-25139

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 within the sprintf() function in glibc. A remote attacker can pas specially crafted data to the application that us using the affected library, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Glibc: 2.37 - 2.37.9000

External links

http://sourceware.org/bugzilla/show_bug.cgi?id=30068
http://www.openwall.com/lists/oss-security/2023/02/10/1

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.