Information disclosure in GNU C Library (glibc)

1) Inclusion of Sensitive Information in Log Files

EUVDB-ID: #VU85931

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39046

CWE-ID: CWE-532 - Information Exposure Through Log Files

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the software can store potentially sensitive data into a log file. When the syslog() function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Glibc: 2.36 - 2.36.9000

External links

http://sourceware.org/bugzilla/show_bug.cgi?id=29536
http://security.netapp.com/advisory/ntap-20221104-0002/
http://security.gentoo.org/glsa/202310-03
http://www.openwall.com/lists/oss-security/2024/01/30/8
http://www.openwall.com/lists/oss-security/2024/01/30/6

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.